Jn0-201 exam answers

Jn0-201 Exam Answers

jn0-201 Exam
juniper networks certified internet associate.m(jncia-m)
* Exam Number/Code : jn0-201
* Exam Name : juniper networks certified internet associate.m(jncia-m)
* Questions and Answers : 107 Q&As
* Update Time: 2010-03-27
* Price: $ 96.00

Exam : Juniper JN0-201
Title : Juniper(r) Networks Certified Internet Associate.m(Jncia-M)

1. Which two routes may be advertised via EBGP? (Choose two.)
A.routes that originate on the local router and are injected using policy
B.routes that do not originate in the local AS and are learned by OSPF
C.routes that originate on the local router and are from protocol aggregate
D.routes that are transiting the local router and are from protocol BGP
Answer: AD

2. Router A has a priority of 64, Router B has a priority of 0, and Router C has a priority of 70. Router D now comes online with a priority of 100.
Which router is the DIS?
A.Router A
B.Router B
C.Router C
D.Router D
Answer: D

Juniper Networks jn0-201 braindumps are highly useful in your preparation for exam jn0-201. Exam jn0-201 dump helps you prepare the most relevant study matter on your certification. Thus, Exam jn0-201 dump shortens your way to your destination. It has been seen that students are feeling quite at home in presence of jn0-201 braindumps as they provide them a chance to take a sigh of relief and they need not to spend hours in their studies for the certification. A great number of candidates for Exam jn0-201 have already been benefited themselves with the amazing study material of jn0-201 braindumps. Testinside, is one of the most canonical company which produce the kinds of IT certification test.

What is a Testinside jn0-201 certification? It is a process of gaining knowledge on a complete defined training jn0-201 course and passes it in least satisfactory jn0-201 score. There are many online web sites that play an important role in providing jn0-201 exam resources, jn0-201 study materials (like jn0-201 exam notes and jn0-201 free practice questions etc), just to enhance your jn0-201 exam preparation. Testinside has gained a lots of reputation in the certification industry as they have a lot of jn0-201 study material ( jn0-201 study notes, jn0-201 practice papers, jn0-201 practice exams, jn0-201 brain dumps, jn0-201 study guides, jn0-201 exam answers, jn0-201 exam questions, jn0-201 test dump) present on the web site.

Juniper Networks jn0-201 exam is one of the core requirements of Juniper Networks Webaf Server-Side Application Development certification. Passing Juniper Networks Webaf Server-Side Application Development exam is easy. Testinside designed this exam preparation guide in such a way that you do not need to search for other books and helping material about jn0-201. This examination guide contains everything you need to pass your Juniper Networks Webaf Server-Side Application Development exam.

Related exams:
1Z0-040
oracle database 10g:new features for adminsitrators
1z0-042 oracle database 10g:administration i
1z0-043 Oracle Database 10g: Administration II
1z0-045 oracle database 10g:new features for oracle8i ocps
1z0-047 Oracle Database SQL Expert

The negative effects of not speaking english in north america

The Negative Effects of Not Speaking English in North America

If you are living in North America, you need to know English. Even if you are living in an area where another language is predominately spoken, such as ethnic regions in big cities or French-speaking areas of Canada, not knowing English is a major disadvantage. Learning English is not difficult, so why not overcome these hurdles and learn the language so that you can live more comfortably in the area you have chosen?

Americans Expect You to Speak English

Unlike many parts of Europe, Americans do not cater to people who speak other languages. Unfortunately, many stores and businesses do not have bilingual employees. Americans expect those who live in their country to speak English. If you are living in or near America, the people around you will expect that you know how to speak their native tongue.

In fact, when you live in North America, especially in America itself, and cannot speak English, you will almost have to rely on someone else to serve as your personal translator when you are out and about in the community. Unless you want to drag your English-speaking friend or child along with you to help interpret for you wherever you go, you really should learn English. This will allow you to be independent as a resident of America.

Signage and Labels Are in English

Since Americans expect the people living in their country to speak English, most signs and labels are printed in English. If you cannot read English, you will have a difficult time driving and shopping in North America. Some border areas, such as those near Texas, will have signs and labels that are bilingual, but the majority of places in America only print signage in one language, and that is English.

Imagine getting in your car and heading out on the freeway to go to the grocery store. You see a sign indicating that there is road construction and a detour, but you cannot read it. Suddenly you are sent on a detour that sends you somewhere you have never been before. How will you get back to the road you intended to be on in the first place? Knowing English is the only way to make sure that you can get where you need to go.

When you reach the store, you will need to know English in order to buy the items on your list. If you need shampoo, you will need to be able to read the shampoo bottle to choose the right type. You could end up walking out the door with shampoo meant for curly haired people when your hair is straight, or you could even end up buying conditioner. Learning to speak and read English will save you from these potentially embarrassing situations.

Knowing English Will Get You a Better Job

If you are looking for employment in North America, not understanding English puts you at a severe disadvantage. You will earn less money and work less prestigious jobs if you do not know English. Even if you have technical knowledge that would give you the chance to earn a decent income, if you cannot communicate in English you will not be granted the job. Most jobs that center on computers and technology require you to speak English, making these jobs unreachable for you until you learn the language.

The bottom line is that if you want to succeed as a resident of North America, communicate with your neighbors, and get a good job, you need to know English. If you do not know English, you are at a severe disadvantage. To overcome this disadvantage, sign up today for an English class or find a program online that can teach you the language. Your career and quality of life in North America depend on this action!

Exam system x bladecenter technical support v5 * exam number/code : 000-085 * exam name : system x bladecenter technical support v5 * questions and answers : 45 q&as * update time: 2010-05-13 * price: $ 89

000-085 online test

000-085 Exam
System x BladeCenter Technical Support V5
* Exam Number/Code : 000-085
* Exam Name : System x BladeCenter Technical Support V5
* Questions and Answers : 45 Q&As
* Update Time: 2010-05-13
* Price: $ 89.00

To attain the IBM Certified System Expert – IBM BladeCenter® V5 certification, candidates must pass 2 tests.

Test information:
* Number of questions: 45-54
* Time allowed in minutes: 75
* Required passing score: 61-68%
* Test languages: English, Chinese, French, Japanese, Korean, Simplified Chinese

Note: There are 45-54 scored items and 5 unscored items.
* 12 months of experience with IBM BladeCenter configuration and implementation
* Operating System Knowledge (Microsoft Windows, Linux, and VMware)
* Knowledge of Operating System deployment strategies
* Knowledge of Networking/SAN connectivity
* Knowledge of IBM BladeCenter Module Options
* Experience with IBM Systems Director
* Experience with Datacenter design and capacity planning

We have years of experience and is backed by some of the top class industrious and Certified IT Professionals who keep changing the IBM product Training Tools and Study Guides with the change in Exam Objectives. 000-085 BrainDumps is a product you can trust for timely, prompt and successful preparation of IT Certifications.

When selecting 000-085 exam study materials, you are buying Testinside’s high quality 000-085 products obtainable through the web today. Testinside 000-085 training test and study guides are recent and updated on regular basis, giving you with the highest 000-085 exam standard. Start your way to 000-085 success by purchasing Testinside’s high quality 000-085 training materials. 000-085 Testinside is maintained and run by a team of IT experts who administer and give a diversity of useful material, which will help the students to achieve the success. Testinside is famous for the study materials it offers for 000-085. You can also download 000-085 actual exam questions.

We provide all the essential 000-085 exam can be found. This package includes 000-085 study guide, 000-085 practice exams, 000-085 online test and Testinside IBM certification ebook. Moreover the 000-085 exam guide is worked out by I.T. experts who enable you to exam braindumps in order to achieve your goal.

If you’re determined to learn italian from a beginner level, please read on, here is some of my experience i want to share and i think you’ll find it useful

rocket italian premium

If you’re determined to learn Italian from a beginner level, please read on, here is some of my experience I want to share and I think you’ll find it useful.

There’re simply two ways of learning a new language, following a teacher or self-learning with an online course. If you have time limitation or a tight budget, I strongly recommend you to choose an online course. The course I’ve been using is called Rocket Italian with which I’ve achieved very satisfying results.

Right after I worked with Rocket Italian, I started using Italian when ordering food, greeting friends and even talking in simple words very quickly and confidently. In the whole package at only $100, I find the 33 audio lessons most helpful. They’re so delicately designed, that I was lead to penetrate the surface of learning a new language without usual difficulties and hassles. These 33 audios are purely conversationally based with one male and one female voices. The female one is by a native Italian called Maria, whose pronunciation is pleasant, crystal clear and easy to follow. I also noticed that the structure is quite smart because old words I learned from previous courses always reappear in latter ones which can effectively reinforce my memory and make me to revise. Every lesson is focusing on one topic which is extremely useful in daily life and I actually used a lot of sayings from a lesson “At the dinner table” at a Spanish friend’s and impressed them all. Rocket Italian also provides a grammar and culture lesson attached with each audio lesson which I think especially useful for those who are determined to take it to an advanced level.

Get FREE 6-Day Italian Course!

The two games MegaAudio and MegaVocab also made the whole learning journey full of fun and entertaining. MegaAudio is to help you with understanding the spoken words by giving 6 pictures and an Italian word so that you can select one from the 6. MegaVocab has a database of about 1000 words. You need to select the Italian word from the 4 options to match the given picture. Remembering new words is always the most boring and difficult part in learning a new language. MegaVocab managed to relieve me from all of that.

Make sure you try the 6-day trial course before purchasing the product to find out whether this online program suits you, which from my perspective will, especially when you don’t have any experience in Italian. To say the least, even if you’re not entirely satisfied with this program, the Refunding Policy until 60 days’ use can eliminate your last hesitation.

Remember Tons of Italian Words with fun MegaVocab Software Learning Game Click here

Transfer life experience into college credit using clep exams

Transfer Life Experience into College Credit Using CLEP Exams

Being able to receive an undergraduate degree in less than four years is an appealing thought to many college students. The sooner students complete their desired degree, the sooner they can enter the workplace and receive compensation for their knowledge and skills. With unemployment on the rise and economic uncertainties abounding, many college students are searching for ways to minimize their student loan expenses and maximize their future earning potential by completing their degree as quickly and affordably as possible.  

College Level Examination Programs (<a href=http://www.speedyprep.com/>CLEP</a>) allows college students, professionals, and other individuals pursuing a college degree to take computerized, multiple choice examinations in order to gain valuable college credit. A successful CLEP test score will often count toward a degree requirement. For example, a student who achieves a satisfactory score on the Introductory Psychology CLEP test will often earn three credit hours and skip his or her Introductory Psychology college course, which is required for the desired degree. With over 2,900 colleges and universities accepting CLEP, many students will find that they can use <a href=http://www.speedyprep.com/clep_exam_procedure.aspx>CLEP exams</a> to earn credits for many courses they are required to take in the first two years of college.

Many students are able to transfer life experience into college credit using CLEP exams. For example a college student pursuing a business degree who has worked as a restaurant manager and attended management training seminars on management may be able to take and pass the Principles of Management CLEP test. A satisfactory score on this CLEP test will likely meet the three hour Principles of Management business degree requirement.

What are the reasons for students to take <a href=http://www.speedyprep.com/clep-test-study-guides.aspx>CLEP tests</a> instead of the actual college course, you may ask?  One answer is another question and one of economics – why should students spend a great deal of hard earned money on tuition to attend courses that cover material they already know?  Each CLEP test costs only $72 to take, plus a small administrative fee, and can provide the student between between 3 and 12 credits. The cost savings of CLEP exams are very apparent when compared to the price of tuition.

Time savings is another advantage of credits earned through CLEP exams. By taking a CLEP test instead of the actual course, students can significantly reduce the amount of time in the classroom by as much as two years.  Over that period of time, an enormous amount of money is saved in tuition fees, textbooks, and living expenses. Using CLEP to receive credits allows the student to skip lower level courses, move onto exciting upper level courses, decrease semester course loads, and even graduate sooner. By graduating sooner, students are able to maximize their lifetime earning potential.

General Information on CLEP can be found online at www.collegeboard.com. CLEP policies vary between colleges and universities so students interested in CLEP should contact their academic advisor prior to taking a CLEP test. Start using CLEP today to turn valuable life experience and knowledge you already possess into actual college credit!

Comptia br0-003

CompTIA BR0-003

CompTIA BR0-003 Exam Description
The CompTIA A+ certification is the industry standard for computer support technicians. The international, vendor-neutral certification proves competence in areas such as installation, preventative maintenance, networking, security and troubleshooting. CompTIA A+ certified technicians also have excellent customer service and communication skills to work with clients.

CompTIA A+ is part of the certification track for corporations such as Microsoft, Hewlett-Packard, Cisco and Novell. Other technology companies, including CompuCom and Ricoh, have made CompTIA A+ certification mandatory for their service technicians. More than 700,000 people worldwide have become CompTIA A+ certified since the program’s inception in 1993.

CompTIA A+ BR0-003 Essentials measures the necessary competencies of an entry-level IT professional with a recommended 500 hours of hands-on experience in the lab or field. It tests for the fundamentals of computer technology, networking and security, as well as the communication skills and professionalism now required of all entry-level IT professionals.

CompTIA A+ BR0-003 Practical Application is an extension of the knowledge and skills identified in CompTIA A+ Essentials, with more of a “hands-on” orientation focused on scenarios in which troubleshooting and tools must be applied to resolve problems.

Testinside BR0-003 dumps
BR0-003 dumps for CompTIA certification are easily available on the internet. Now you need not hanker after the study materials in the market. Testinside CompTIA BR0-003 dumps help materialize your dreams of success with minimum effort. BR0-003 dumps are the choice of all IT professionals who aspire to obtain CompTIA BR0-003 certification. Some of the websites on certifications provide free BR0-003 dumps to help the IT professionals in their studies for CompTIA certifications.

Testinside provides high quality CompTIA BR0-003 braindumps. It is the best and the lastest CompTIA Practice Exams. Furthermore, we are constantly updating our Testinside BR0-003 Exam. These Exam Resources updates are supplied free of charge to Testinside customers. If you have any question about Testinside BR0-003 braindumps, please feel free to contact us at any time.

Cog-200 dumps

Cog-200 Dumps

COG-200 Exam
IBM Cognos 8 Controller Developer
Exam Number/Code : COG-200
Exam Name : IBM Cognos 8 Controller Developer
Questions and Answers : 94 Q&As
Update Time: 2010-03-22
Price: $ 120.00

COG-200 Objectives:
Company structures (5%)
Account structures (11%)
General configuration set up (15%)
Data entry and data import (19%)
Journals and closing versions (5%)
Currency conversion (11%)
Control table configuration (9%)
Intercompany transactions and acquisitions (10%)
Consolidating by steps and consolidating by status (5%)
Secure the application and the data (4%)
Data analysis reports (6%)

COGNOS Exam COG-200 is among those popular It Certifications which are the dream of all ambitious IT professionals. It requires a thorough COG-200 exam quesstions preparation on the part of the candidates so that they may obtain maximum score in IBM Exam COG-200 and make their profiles compatible to market requirements. Owing to its great popularity, you can find a lot of helping COG-200 braindumps for your preparation.

IBM certification exams is becoming increasingly important for those who want to engage in IT industry. Now, It is possible to easily pass IBM COG-200 Certification Exam in your first attempt. Testinside will help you prepare well for your coming IBM COG-200 Certification Exam with confidence. Testinside IBM COG-200 Certification Exam Training, Testinside Practice Questions and Answers with Explanations, and other Testinside COG-200 Training Tools are available to you at Testinside.

It is not even hard to fulfill the prerequisites of this exam. There will be hundreds of IT professional who have enough experience in the required domain and looking ahead their career growth with COG-200 Exams.

But hassle starts from COG-200 exam prep that is the core of bearing. There are currently countless ways like; self study books, coaching centers and online resources escorting your exam training. But one of the most accepted and feasible approach is COG-200 dumps that works wonders regardless of your current job or work routine.

Related exams:
pk0-002
IT Project+ Certification (2003 Objectives)
RH302 Red Hat Certified Engineer on Redhat Enterprise Linux 5 (Labs)
SY0-201 CompTIA Security+(2008 Edition) Exam
TT0-201 Convergence Technologies Professional 2007
VCP-310 VMware Certified Professional on VI3

Obama grants should encourage moms to get a degree

Obama Grants Should Encourage Moms To Get A Degree

No doubt higher education is important, but there are often a number of obstacles that can hinder potential students from enrolling in college. Family obligations and financial concerns are often at the top of this list, especially when it relates to single mothers. In an attempt to ease some of the concerns associated with going to college, Obama grants are intended to encourage mothers to return to college to earn a degree. The purpose of federal grants can be seen in many cases to help disadvantaged groups to attend college. An endowment often given to low-income students, is the federal Pell grant. Since the Obama administration has stated that it places a high priority on education, the benefits of Pell grants have been augmented to be a greater help to potential students. In particular, working moms are especially encouraged to apply for the Scholarships for Moms program, which is just a title given to a portion of the standard Pell grant program. The administration believes that by equipping low-income mothers to earn a degree, this will provide a stimulus to the lagging economy, and be a great benefit to families of those mothers as it will in turn increase their earning power in the work force. While the cost of education is high these days, $5,000 from a Pell grant may not seem like a lot of money, but it can be a help when you consider the other expenses associated with going to college. As well as books and supplies, a student has additional expenses of housing and travel as well. Childcare costs for a single mom, may also be included in these miscellaneous expenses. One of the great advantages of the Pell grant award is that the money awarded does not necessarily have to be applied to college tuition. Providing the expense is vital to obtaining an education, it can be covered by the grant money. Finally, consider that this program doesn?t cater specifically to traditional students; it provides opportunity for traditional and non-traditional students alike. Mothers wanting to return to college to earn a degree are just as welcome as a student who is fresh out of high school. Consideration is given equally to mothers who would like to stay home and take care of their children while doing online courses, to potential students who would prefer to go to a small community college. The most important factor is that all willing students are able to earn a degree that will provide them with significant opportunity in the job market. An effort by the current administration to show that education truly is the key to a bright future are Obama grants. With the allocation of a significant amount of money to pay for education, everyone from young adults to working mothers has a chance to go to college.

Kansas city schools change licensing requirements

Kansas City Schools Change Licensing Requirements

The state of Kansas’ Board of Education is expected to make a change to teacher licensure requirements that could help Kansas City Schools get the teachers it needs. According to Martha Gage, director of teacher education and licensure, the Professional Standards Board recommends the improvements.

The changes will allow teachers in Kansas City Schools, and across the state, to add subjects to their portfolios with greater ease. Why is this important to Kansas City Schools? As a result of the state increase in science department credits required for graduation, the Kansas City Schools cannot fill its need for chemistry and physics teachers. This change would allow a biology teacher to take the competency test in a different science area, like chemistry, and be qualified to teach it.

Opponents voice concerns that this change will not ensure that Kansas City Schools’ teachers are really prepared to teach such in-depth subjects. John Richard Schrock, director of the biology education program at Emporia State University, feels that passing a competency test alone is not enough. These Indianapolis Schools’ teachers might be required to take more courses just in order to pass the difficult tests, but even would that prove sufficient?

But that’s not the only change that will hit Indianapolis Schools if the state’s board of education passes the initiative. The changes are designed to remove cumbersome paperwork and redundant information from the process of becoming a teacher in Kansas. While that should sound good to everyone, the final change involves lowering the grade point average (GPA) required to obtain conditional certification. Currently, a teacher applicant in Kansas City Schools must have a college GPA of at least 2.5. Of course, a veteran teacher from out of state may have a wealth of experience, and be a great teacher, but have done poorly 25 years ago in college. Proponents claim that the GPA is just one indicator of an applicant’s ability to teach. While some argue for maintaining the higher standards, the need for Kansas City Schools to find qualified teachers seems to be winning.

Advocates of both Kansas City Schools and the Kansas National Education Association feel that these changes are a way to fill the teacher gap while still maintaining a reasonable standard for teachers. Standards for both teachers and students have been a hot button topic in Kansas City Schools since the No Child Left Behind (NCLB) act went into effect in 2002. Its requirement for highly qualified teachers in areas like math and science, combined with the state’s increase in science credits for graduation has put Kansas City Schools in a teacher quandary. Kansas City Schools are not alone. Public schools nationwide have been forced to innovate and adapt in order to succeed in the current educational climate.

An epigrammatic account of sql

An Epigrammatic Account of Sql

The time gone by of SQL begins in an IBM laboratory in San Jose, California, where on earth SQL was urbanized in the late 1970s. The fundamental pose for Structured Query Language and the language itself is time and again referred to as “sequel.” It was in the inauguration built-up for IBM’s DB2 item for consumption as a basic criterion of a relational database management system, or RDBMS.. In fact, SQL creates an RDBMS achievable. SQL is a nonprocedural language, in disparity to the procedural or third-generation languages such as COBOL and C that had been created up to that time. The quality that categorizes a DBMS from an RDBMS is that the RDBMS provides a set-oriented database language. For most RDBMSs, this set-oriented database language is SQL. Two standards association, the American National Standards Institute and the International Standards Organization, currently prop up SQL standards to exchange. The ANSI-92 standard is the customary for the SQL used throughout this article. Although these standard-making bodies systematize standards for database system designers to tag along, all database products differ from the ANSI standard to some degree. In addition, most systems provide some proprietary extensions to SQL that extend the language into a true procedural language. We have used various RDBMSs to prepare the examples in this article to give you an idea of what to expect from the common database systems.

It was an inquiring feeling whether there is a modest background on the evolution of databases and database conjecture would facilitate us value the workings of SQL. Database systems stock up in sequence in every feasible business environment. From outsized pathway databases such as airline proviso systems to a child’s baseball card collection, database systems store and hand out the data that we depend on. Until the last few years, large database systems could be run only on large mainframe computers. These machines have traditionally been expensive to design, purchase, and maintain. However, today’s generation of powerful, inexpensive workstation computers enables programmers to design software that maintains and distributes data quickly and inexpensively.

Replica of Database

1. The largest part of popular data storage model is the relational database, which was bedded on a formative paper named “A Relational Model of Data for Large Shared Data Banks,” written by Dr. E. F. Codd in 1970. SQL steps forward to service on the conception of the relational database introduced by Dr. Codd who had promulgated such new exploration for creating and building object orient programming software to be based on the 13 rules, referred to as Codd’s 12 Rules, for the relational model which are the basic milestone in RDBMS concept.:

2. The following rules have been explored by Dr. Codd which are basically known as ‘Dr. Codd’s Database rules.

1. All information in a relational database (including table and column names) is represented explicitly as values in tables.

2. Every value in a relational database is guaranteed to be accessible by using a combination of the table name, primary key value, and column name.

3. The DBMS provides systematic support for the treatment of null values (unknown or inapplicable data), distinct from default values, and independent of any domain.

4. The description of the database and its contents is represented at the logical level as tables and can therefore be queried using the database language.

5. At least one supported language must have a well-defined syntax and be comprehensive. It must support data definition, manipulation, integrity rules, authorization, and transactions.

6. All views that are theoretically updatable can be updated through the system.

7. The DBMS supports not only set-level retrievals but also set-level inserts, updates, and deletes.

8. Application programs and ad hoc programs are logically unaffected when physical access methods or storage structures are altered.

9. Application programs and ad hoc programs are logically unaffected, to the extent possible, when changes are made to the table structures.

10. The database language must be capable of defining integrity rules. They must be stored in the online catalog, and they cannot be bypassed.

11. Application programs and ad hoc requests are logically unaffected when data is first circulated or when it is reallocate.

12. It ought not to be potential to get around the integrity rules defined through the database language by using lower-level languages.

A good number database has had a “parent/child” relationship; that is, a parent node would contain file pointers to its children. This method has several advantages and many disadvantages. In its favor is the fact that the physical structure of data on a disk becomes unimportant. The programmer simply stores pointers to the next location, so data can be accessed in this manner. Also, data can be added and deleted easily. However, different groups of information could not be easily joined to form new information. The format of the data on the disk could not be arbitrarily changed after the database was created. Doing so would require the creation of a new database structure. Codd’s idea for an RDBMS uses the mathematical concepts of relational algebra to break down data into sets and related common subsets. Because information can naturally be grouped into distinct sets, Dr. Codd organized his database system around this concept. Under the relational model, data is separated into sets that resemble a table structure. This table structure consists of individual data elements called columns or fields. A single set of a group of fields is known as a record or row. For instance, to create a relational database consisting of employee data, you might start with a table called EMPLOYEE that contains the following pieces of information: Name, Age, and Occupation. These three pieces of data make up the fields in the Job holder table.

Job holder table.

Name Age Occupation

Mehedi 12 Electrical engineer

Gias 44 Museum curator

Kaium 42 Assistant Chef

Abdul Karim 29 Student

Mohammad 32 Game programmer

Kamruzzaman 46 Singer

The six rows are the records in the Job holder table.

. To retrieve a specific record from this table, for example, Dave Davidson, a user would instruct the database management system to retrieve the records where the NAME field was equal to Dave Davidson. If the DBMS had been instructed to retrieve all the fields in the record, the employee’s name, age, and occupation would be returned to the user. SQL is the language that tells the database to retrieve this data. A sample SQL statement that makes this query is

SELECT *

FROM EMPLOYEE

It is important to note that the exact syntax is not important at this point. Due to the fact that the various data items can be grouped according to obvious relationships, the relational database model gives the database designer a great deal of flexibility to describe the relationships between the data elements. Through the mathematical concepts of join and union, relational databases can quickly retrieve pieces of data from different sets (tables) and return them to the user or program as one “joined” collection of data. The join feature enables the designer to store sets of information in separate tables to reduce repetition.

Duty table.

Name Duties

Skender Cook

Lily Huq Teacher

Shovon Dancer

Idiorty Superintendent

Designing the Database Structure

The vital decision for a database designer, after the hardware platform and the RDBMS have been preferred, is the structure of the tables. Decisions made at this stage of the design can affect performance and programming later during the development process. The process of separating data into distinct, unique sets is called normalization.

Modern Database Panorama

Computing technology has made a permanent change in the ways businesses work around the world. Information that was at one time stored in warehouses full of filing cabinets can now be accessed instantaneously at the click of a mouse button. Orders placed by customers in foreign countries can now be instantly processed on the floor of a manufacturing facility. Even though 20 years ago much of this information had been transported onto corporate mainframe databases, offices still operated in a batch-processing environment. If a query needed to be performed, someone notified the management information systems (MIS) department; the requested data was delivered as soon as possible. In addition to the development of the relational database model, two technologies led to the rapid growth of what are now called client/server database systems. The first important technology was the personal computer. Inexpensive, easy-to-use applications such as Lotus 1-2-3 and Word Perfect enabled employees (and home computer users) to create documents and manage data quickly and accurately. Users became accustomed to continually upgrading systems because the rate of change was so rapid, even as the price of the more advanced systems continued to fall.

The second important technology was the local area network (LAN) and its integration into offices across the world. Although users were accustomed to terminal connections to a corporate mainframe, now word processing files could be stored locally within an office and accessed from any computer attached to the network. After the Apple Macintosh introduced a friendly graphical user interface, computers were not only inexpensive and powerful but also easy to use. In addition, they could be accessed from remote sites, and large amounts of data could be off-loaded to departmental data servers.

During this time of rapid change and advancement, a new type of system appeared. Called client/server development because processing is split between client computers and a database server, this new breed of application was a radical change from mainframe-based application programming. Among the many advantages of this type of architecture are

• Reduced maintenance costs

• Reduced network load (processing occurs on database server or client computer)

• Multiple operating systems that can interoperate as long as they share a common network protocol

• Improved data integrity owing to centralized data location

In putting into practice Client/Server figure, Bernard H. Boar classifies client/server computing as follows:

Client/server computing is a processing model in which a single application is partitioned between multiple processors (front-end and back-end) and the processors cooperate (transparent to the end user) to complete the processing as a single unified task. Implementing Client/Server Computing A client/server bond product ties the processors together to provide a single system image (illusion). Shareable resources are positioned as requestor clients that access authorized services. The architecture is endlessly recursive; in turn, servers can become clients and request services of other servers on the network, and so on and so on. This type of application development requires an entirely new set of programming skills. User interface programming is now written for graphical user interfaces, whether it be MS Windows, IBM OS/2, Apple Macintosh, or the UNIX X-Window system. Using SQL and a network connection, the application can interface to a database residing on a remote server. The increased power of personal computer hardware enables critical database information to be stored on a relatively inexpensive standalone server. In addition, this server can be replaced later with little or no change to the client applications.

Oracle Corporation released the first commercial RDBMS that used SQL. Although the original versions were developed for VAX/VMS systems, Oracle was one of the first vendors to release a DOS version of its RDBMS. (Oracle is now available on more than 70 platforms.) In the mid-1980s Sybase released its RDBMS, SQL Server. With client libraries for database access, support for stored procedures (discussed on Day 14, “Dynamic Uses of SQL”), and interoperability with various networks, SQL Server became a successful product, particularly in client/server environments. One of the strongest points for both of theseSQL Server powerful database systems is their scalability across platforms. C language code (combined with SQL) written for Oracle on a PC is virtually identical to its counterpart written for an Oracle database running on a VAX system.

According to Dr. Codd, the term SQL can be confusing. The S, for Structured, and the L, for Language, is undemanding enough, but the Q is a little misleading. Q, of course, stands for “Query,” which–if taken literally–would restrict you to asking the database questions. But SQL does much more than ask questions. With SQL you can also create tables, add data, delete data, splice data together, trigger actions based on changes to the database, and store your queries within your program or database. Unfortunately, there is no good substitute for Query. Obviously, Structured Add Modify Delete Join Store Trigger and Query Language (SAMDJSTQL) is a bit cumbersome. In the interest of harmony, we will stay with SQL. However, you now know that its function is bigger than its name. The most commonly used statement in SQL is the SELECT statement (see Day 2, “Introduction to the Query: The SELECT Statement”), which retrieves data from the database and returns the data to the user. The EMPLOYEE table example illustrates a typical example of a SELECT statement situation. In addition to the SELECT statement, SQL provides statements for creating new databases, tables, fields, and indexes, as well as statements for inserting and deleting records. ANSI SQL also recommends a core group of data manipulation functions. As you will find out, many database systems also have tools for ensuring data integrity and enforcing security (see Day 11, “Controlling Transactions”) that enable programmers to stop the execution of a group of commands if a certain condition occurs.

In view of the above discussion, it is obvious that in creating an object oriented programming software, the importance SQL is inevitable. In integrating parent-child relationship, SQL is very important. From SQL, Insert, Update and Delete Command are helpful. In a nut shell, we exercise Oracle7, which represent the larger corporate database world, to demonstrate command-line SQL and database management techniques. These techniques are imperative for the reason that the days of the standalone machine are drawing to an end, as are the days when expressive one database or one in commission system was enough. In command-line, simple stand+[cedilla]one SQL statements are entered into Oracle’s SQL*Plus tool. This tool then returns data to the screen for the user to see, or it performs the apposite action on the database. Most examples are directed toward the beginning programmer or first-time user of SQL. We begin with the simplest of SQL statements and advance to the topics of transaction running and stored procedure programming. The Oracle RDBMS is circulated with a full complement of development tools. It comprises a C++ and Visual Basic language library (Oracle Objects for OLE) that can link an application to a Personal Oracle database. It also comes with graphical tools for database, user, and object administration, as well as the SQL*Loader utility, which is used to introduce internally and send abroad data to and from Oracle.