Saturday, July 25, 2009

Assignment Lanka Site Map

Apparel
C++

Computer Networks
Computer Programming Languages

Project Principles

• Contributions to the project would be divided equally amongst team members
• Subject matter experts will be readily available to Spot-On Development given the convenient location of their offices in conjunction with their agreement to do so.
• SETWEB students will meet established prerequisite skills and be available for pilot testing
• Client sign-offs will be adhered to Spot-On Development and client sign-off’s will adhere to established timeline
• Project scope stay within established guidelines
• Spot-On Development will not be responsible for maintaining any products developed

3.4 Work to do

· Site resides on the Blackboard server.

· Access to the server files structure

· Conditional or selective release of content

· To batch upload test questions

· Use of calculation questions within a quiz

· Multiple chat rooms available for each course

· Shared file structure for group work

· Advanced student and page tracking features

· Chat capabilities are automatically logged

· Instructor control of course archives

· An internal e-mail system

· A grade book that can be customized and provides calculations of final grades.

· Checking the quality of the project as well as graphics of the VLE.

· Check site give correct details such as course syllabus sample exam papers.

3.2 Managerial decisions to the project

1. Designing a product that deviates from the various tutorials currently available

2. Meeting established timelines with beta product ready for scheduled pilot test Date

3. Maintaining client expectations throughout product design and development

4. No allowable budget for second programmer, which would be beneficial due to the nature of the project

3.1 Ordered stages of the Project

1. Manage course progress and grades within Blackboard.

2. Evaluate, select, and employ the different levels of available Blackboard

Support when necessary

3. Communicate using Blackboard s bulletin boards and main tools

4. Navigate throughout Blackboard to appropriate tools

5. Submit and retrieve course assignments, quizzes, and tests as assigned Through Blackboard

3.0 Project Description

The THURSTAN College needs to install new VLE to their higher education department. Form the market they try to select best product to success their requirement as a consulter I select Both WebCT and Blackboard from that finally decide to select Blackboard is fro the best VLE for the College. From the Blackboard college want to implement their VLE, college has to implement the following statement;

2.2.1 What the College need from the VLE

In the from the beginning of this project we discuss about what the college need now I can summarize what college need in point form such as;

• Access to the server files structure
• Conditional or selective release of content
• To batch upload test questions
• Use of calculation questions within a quiz
• Multiple chat rooms available for each course
• Shared file structure for group work
• Advanced student and page tracking features
• Chat capabilities are automatically logged
• Instructor control of course archives
• An internal e-mail system
• A grade book that can be customized and provides calculations of final grades.

Those are the main functions we need; also I decide to use Blackboard Learning system as our VLE because it is easy to handle in those situation users can easy to heddle both of students and Lectures. Let see ho is Cost effective;


WebCT Training budget $16,270.00
WebCT Training Hours 55 hours
WebCt Purchase Budget $7,000 - $30,000

Blackboard Training cost $ 3,000
Blackboard Training hours 10 hours
Blackboard Purchase Budget $5,000-7,500

* Please note this budget values will change according to the product and the user skill but WebCT cost is higher than to the Blackboard.

2.1.7 Weaknesses of the WebCT

WebCT has long been criticized for being the most difficult of the course management systems to use. Partly this criticism reflects the flexibility and power of the system - where other systems present a single way of organizing or adding course material, WebCT offers several options with more of the structure left to the individual instructor. The "Vista" version of the product represents an attempt to derive a more even balance between flexibility and ease of use, and while it has been successful in some ways, it is still generally considered more flexible and less easy to use than some of its competitors. Both of WebCT and blackboard are categories same VLE function as well as same production company but WebCT is less user friendly software than the Blackboard.

2.1.6 Compare WebCT and Blackboard

Through the process of evaluation, we reached the conclusion that Blackboard and WebCT were the major contenders for purchase for a pilot study. Both products are well-established, with substantial market share and a track record of being responsive to their user communities. They both explicitly deal with the ever increasingly important issues of accessibility and standards. Both these products have a wide user base particularly in UK higher education, which has two main benefits. Firstly training materials are already available and support is forthcoming in terms of email lists. Secondly it provides greater opportunity for future collaboration. Both products also have clear ‘development roadmaps’ for future functionality and customization. As such we recommend that further investigation be carried out into these products. The Learning Technology Group, in conjunction with ISD, has met with the software vendors and obtained more detailed information about the products. Most of the evidence of benefits, even in the case of the more established systems such as WebCT and Blackboard, still tends to be anecdotal, although studies in HE are beginning to investigate the impact of the various functions of the more established products in more detail.

2.1.5 Benefits of the WebCT

WebCT scores well in the functionality areas. It talks explicitly about accessibility issues and inter-operability standards. The WebCT web site includes a detailed product ‘roadmap’. Course creation and management tools are extensive. Like Blackboard, WebCT offers strong support for IMS standards and accessibility requirements, including the possibility of producing localized versions to cope with any variation in accessibility requirements (such as emerging legal requirements in the UK). WebCT offers a variety of language plug-ins so that a course environment can be developed in, say, French – examples might be a language course or a distance course for overseas students. The software does not translate materials but key aspects of the course environment can be presented in a number of languages.

2.1.4 WebCT

WebCT (Web Course Tools) is an online proprietary virtual learning environment system which is sold to colleges and other institutions and is used extensively in many campuses for e-learning. Instructors can add to their WebCT courses tools such as discussion boards, mail systems and live chat, along with content such as documents and web pages. WebCT was developed in the Department of Computer Science at the University of British Columbia.

Blackboard Benefits

All users have to register and need a username and password to access the software. Once the user logs into Blackboard, a personal My Institution page is displayed. This main page has several main areas including a series of Navigation buttons, Navigation tabs a Module area (which contains announcements, course links etc.), a Tools area (containing utilities such as My Grades, Send an E-mail, Calendar etc.) and a Search Box. Within the Module area, students can see the courses they are registered for on Blackboard. The courses can also be accessed by clicking on the My Courses tab within the My Institution page.

The Blackboard course environment consists of two views. The Student View is the only view available to students enrolled on a course. In this view, a number of navigation buttons can be accessed. The exact navigation buttons themselves can be customized by the instructor, but typically include buttons such as Announcements, Course Information, Course Documents, Faculty Information, Assignments, Websites for the Course, Tools, Communication and Assignments. In contrast, the Control Panel is only available to Instructors, and this is the place where the Instructor manages the entire course and essentially constructs and tailors the course in their own way. As a user of Blackboard for several semesters now, I would highly recommend Blackboard as a course management tool for Instructors. Most Instructors need only general familiarity with the standard Windows environment to quickly come to grips with the system. The ease of use of Blackboard is exceptional. As a former user of WebCT, I must admit I found the Blackboard interface and navigation easier to learn at the beginning especially in relation to the posting of course information, announcements etc. Course Documents also has similar features to Course Information, and PowerPoint slides, Word documents etc. can be posted here, which may correspond to different chapters of a textbook etc. Furthermore, as the course is only accessible to the students and the Instructor teaching the course, not everybody can see the material. PowerPoint slides can also be posted in such a way that the students can only see the slides, without being able to edit them if an Instructor wishes. An e-mail can also be sent to all students and Instructors having access to the course, which is an excellent facility of the system. This makes efficient and prompt direct contact with the students.

One other new feature which was introduced in the 6th release of the Blackboard Learning System has been that of the Assignment Manager. This new tool actually combines the file exchange capabilities of the Digital Drop Box, with the functionality of the Gradebook in Blackboard. The Digital Drop Box is still present in the system, and can be used to transfer files to users. This is an excellent feature, as instead of forwarding e-mail attachments, one can send a file to a student very quickly through Digital Drop Box. This can be tedious if you receive say twenty-five files from students as homework assignments. There is no select all, delete facility. In contrast, the new tool, Assignment Manager is an area where course assignments can be posted, related files can be uploaded and grades published. It is the latter point that really distinguishes this feature from the Digital Drop Box. The Digital Drop Box should be used if you wish to exchange files between students etc, but where you do not wish to give grades.

The former in comparison should be employed where a final grade will be assigned to a student’s work. One of the most useful facilities of Blackboard has to be its Assessment facilities. In Pool Manager, a bank of questions with no point values can be created by an Instructor. Pool Manager can then be used to generate questions for on-line quizzes, exercises and tests. This facility should be used before importing the question banks into the Test Manager. One key advantage of Pool Manager is that the pool of questions can easily be readily exported. This gives great flexibility in courses where multiple Instructors are involved, as each can create banks of questions and transfer them to each other. With this utility, vast libraries of question banks can be built up in a Department on an ongoing basis each semester. Blackboard itself has the provision for seven different types of questions: multiple-choice, true/false, fill in the blank, order, multiple answer, match two lists and essay. Although the latter can be used, in the opinion of this reviewer, this type of question is probably not best suited to Blackboard, as there is a limit on the twenty answer patterns that can be used, and spelling mistakes, additional spaces and punctuation can invalidate an answer. In addition, an essay type question needs the Instructor to grade it. Having created a pool of questions in Pool Manager, the questions can then be imported into Test Manager for use in a test.

2.1.2 The Blackboard Learning System

The Blackboard Learning System is a complete and flexible e-Learning software stage that delivers a total course organization system. Blackboard itself was developed in 1997 and the Washington DC based Blackboard Inc. Software Company is now one of the main software companies worldwide for e-Education. In this view, the two leading course management systems used in tertiary Institutions worldwide at present are Blackboard and WebCT The reason of this review is not to compare and difference these two person web course tools, but rather to outline some of the skin of Blackboard, as a course management tool, and describe its advantages and short-comings in particular in relation to its use as a course management tool for courses. We at present use Blackboard 6.1 as the standard course management tool across the university campus. Blackboard has customizable institution-wide portals, online communities and has an advanced structural design, which means that the system allows outstanding web-based integration with administrative systems. This latter feature makes Blackboard an excellent choice for Universities in adopting a complete course organization system.

2.1.1 Take two Products from the Market

The reason there are so many products on the market is that not all VLE’S offer the same range of functionality. In addition, the scope of the options available is not always the same. For example, not all communication tools offer the same level of functionality or flexibility. Another reason for variety is because different systems have different strengths and weaknesses. However, this does not necessarily mean one system is better than another as increased functionality can sometimes mean increased complexity and confusion. Therefore, the reason that there are so many products on the market is because people have different preferences, and different products help meet those needs in different ways. There have been several reviews conducted regarding the comparison of online course

Delivery tools or Virtual Learning Environments and there are a great number of Products. After some general research, we produced a shortlist for detailed evaluation.

· Blackboard

· COSE

· Nathan Bodington Building

· TekniCAL (Virtual Campus)

· Top Class

· WebCT

These products were chosen because, in general terms, they fulfill the criteria for a Virtual Learning Environment with regard to functionality. The ranges of products are quite different in their approaches

The most important reason for choosing a VLE is that it will give you enhanced benefits to traditional face to face teaching and learning. It is important to have a reason to use technology rather than feel you have to just because the technology exists. In order to choose a VLE you must therefore draw up a list of criteria and reasons for using the technology. From here you are then in a better position to select a VLE knowing what you want, and will be able to match these criteria to a VLE that will best suit your needs. So from the Market there are suitable two products are available;

1.2.1 Advantages of VLE

If we talk about VLE by taken separately, communications, content delivery and even assessment can be delivered via the Web without the need for a VLE. However, because a VLE ties all these technologies into one product and coordinates the information seamlessly it offers so much more than any of the individual technologies could ever do on their own. There are a number of challenges in Higher Education which VLE’S can help with and these include:

Increasing student numbers

Automated assessment

Widening participation

Improved access to limited resources

The reason VLE’S have become so popular and embedded in many institutions is because there are real benefits to be gained from the use of the technology. Ever increasing student numbers is one obvious aspect of Higher Education where VLE’S can help. They can maintain good communications links and there are opportunities for automated assessment. In terms of widening participation VLE’S can provide support and resources to say, part time students who can’t always travel to the campus.

1.2 Why VLE important?

A VLE provide wide rage of tools for the teaching as well as

The learning functions. Before going to VLE project the college has to get the better idea of above requirements;

· Information Delivery is going correct way.

· Peer support

· Group work

· Self assessment

· Good lecture and the student communication.

· Proper IT requirement for the studies

· Possible back ground requirement.

· Possible software and hardware requirement.

Before going to VLE system the college management has to identify the above requirements, is it is mach with the VLE.

If we take information delivery is going correct way as a fist point;

We have to mention about the lecture notes. Lecture can provide note through the VLE but some times student can’t access or the lecture note has some error when it display time and display haven’t good quality.

The administrators or the management have to make a view point to above scenario.

Peer support is another major point if we take that Administrators and Lectures have to check whether student can make their assessment alone or if there are any confuse point available in the learning procedure. You can guarantee with the use of technology is that at some stage things will go wrong. The use of a VLE should therefore have some sort of support or backup plan to cover such eventualities. As part of the planning process sources of help should be identified who may be able to help at short notice, say in the event of a network problem. A short term alternative should also be prepared for example, an independent activity, as cover for when things do go wrong.

Also using VLE the lectures should have to know whether the students work as group that mean group work also should be there self assessment and good communication between the lectures and the student must be there because doing from the self assessment the students can get better knowledge, and also other important thing is have a good communication between the lectures and the students. Some times student may have some difficulties in that situation lectures must solve their subject problem. Teaching and learning content, say lecture support notes, is very straightforward but something which can quickly turn students off if not thought out properly. Sometimes staff complains that if they put their lecture notes on the web the students won’t attend the lectures. Or complain that students don’t read the notes even if they do put them on the VLE. These are valid points but which equally apply if the content was paper based.

Other things are proper IT,

It may be back ground, Requirements or Equipments if we talk about the back ground student and lectures want to have good IT background because if the people who use VLE as their education environment but they don’t know about the IT mean they may face large amount of difficulties. Other thing is the requirement or the equipment which use to access to the

For distance learning students, tutors can track if students are engaging with the online communication and associated materials. The assessment drop box allows students to submit assessments virtually. These are collated and time-stamped by the VLE ready for collection in one area by the tutor. After marking, feedback can rapidly be distributed to the students individually, through the VLE. However, a drawback is that many VLE’S do not allow submission which supports anonymous marking. One possible way of using a VLE to encourage student learning is to give a skeleton of the lecture notes online and use the lectures to ‘fill in the gaps’. This way, more time during the lecture can be spent discussing the content with the student rather than simply expecting them to dictate your notes.

1.1.4 Terms which use for education other than to VLE?

1. E- Learning

E-Learning refers to learning that is delivered or enabled via electronic technology. It encompasses learning delivered via a range of technologies such as the internet, television, videotape, intelligent tutoring systems, and computer-based training. e-Learning is a subset of the larger worlds of both “information technology ”and “education and training ”.It can be valuable when used as a part of a well-planned and properly supported education and training environment, but e-learning is not a magic bullet that replaces nor renders obsolete existing pedagogical theories and approaches. Many learning and technology professionals believe that e-learning will have “arrived” when we stop referring to it by a separate name and begin considering it as an integral part of a complete learning environment.

2. Dokeos

Dokeos is an learning environment and course management web application and also a collaboration tool. It is free software released under the GNU GPL, its development is an international, collaborative effort. It is also OSI certified and can be used as a content management system for education and educators. Its features for course management include content distribution, calendaring, progress tracking, text/audio/video chat, test administration, and record keeping. As of 2004, it has been translated into 31 languages (in various stages of completion) and is used by more than one thousand organizations.

The main goals of Dokeos are to be a very user-friendly and flexible system with an easy to use interface. It wants to be a tool for good learning, so that users have minimal notice of the tools and maximum attention for the content.

3. ILIAS

ILIAS is a powerful web-based learning management system that allows users to create, edit and publish learning and teaching material in an integrated system with their normal web browsers. Tools for cooperative working and communication among students and lecturers are included as well as those for assessment and evaluation. Moreover, didactical structures for complete courses can be developed.

1.1.3 Features of VLE

.1.3 Features of VLE
1. Shared work group areas – allows designated groups of students to upload and share files as Well as communicate with each other.

2. Communication between tutors and students – e.g. e-mail, discussion board and virtual chat Facilities, which support various types of communication: synchronous and asynchronous, one-to-one, one-to-many and many-to-many.

3. Delivery of learning resources and materials – e.g. through the provision of lecture notes and supporting materials, images and video clips, links to other Web resources, online discussion and assessment activities.

4. Self-assessment and summative assessment – e.g. multiple-choice assessment with automated marking and immediate feedback.

5. Support for students – could take the form of communication with tutors or other students, provision of supporting materials such as course information and Frequently Asked Questions.

6. Student tools – e.g. individual student WebPages, ‘drop boxes’ for the upload of coursework, electronic diaries and calendars.

7. Management and tracking of students – e.g. usernames and passwords to ensure that only registered students can access the course; analysis of assessment undertaken by students or their use of materials within the VLE.

1.1.2 Term of VLE

  • Conferencing Tool

Most of the time with VLE it provide conference tool, this tool is very important for the student as well as the teachers because from conference tool they can discuss the problems which occur in learning. They provide the means for students to engage in collaborative exchange about topics on the course.

  • E-mail

Form e-mail VLE users can make better bridge to communicate among them that is really give help to them solve the educational problems

· Metadata

Metadata is defining in sequence about an entity. It is imperative for categorizing and thorough matter according to their proposed use in a exacting background. A complicated metadata set can include a wide selection of in sequence about an entity. For example, for a Java applet that is included as a supply in a route unit, the metadata would provide information about who created it, when it was created, who the target spectators is etc. Most present VLE’s include some easy system for as long as metadata concerning capital, course units and populace; though more than a few systems those are at present under growth are paying more concentration to the metadata subject. To be truthfully successful any metadata system be supposed to be consistent in some way so that it can be used crossways unusual systems quite than being local to a exacting system. For these reason values efforts such as the IMS project initiate by EDUCAUSE in the US and the Adriane project in Europe are of particular relevance.

· Assignment

From through the VLE teachers can provide assignment what student want to do as well as the course contains for students to return completed assignments to the tutor for grading and feedback. Most of the universities use assignment providing through the VLE.

· Assessments

Under assessments we can have quest test in online then student can learn more about the causes under assessments. Although not all VLES are capable of offering assessment tools there are a wide range of independent assessment products available which can sometimes be linked to a VLE to enhance its functionality. One big advantage of having an integrated assessment tool is that it usually enables results to be stored and used with other content within the system.

What is Virtual Learning Environment (VLE)?

A Virtual Learning Environment (VLE) is an application or software. It started in second half of the 1990’s. They were initially not web based. It is provide facility to online learning whichever campus, school or any ware. 'The term learning platform describes a broad range of ICT systems used to deliver and support learning. Through a learning platform, hardware, software and supporting services are brought together to enable more effective ways of working within and outside the classroom. At the heart of any learning platform is the concept of a personalized online learning space for the pupil. This space should offer teachers and pupil’s access to stored work, e-learning resources, communication and collaboration with peers, and the facility to track progress.

It is having various kinds of functions for an example.

1. Computer Conferencing.

2. Delivery of course materials.

3. Submission Assignment

4. Return Assignment.

5. E-mail Facility.

6. Creating online exams. Etc.

Some universities have embraced the idea of online learning and VLE by impressive a single system across the whole institution.

Initially VLE software was seen as primarily of interest to the field of distance education. Virtual Learning Environments are now seen as having a wide variety of applications in usual universities.

Such as;

1. The internet access staff and student amount is increasing on campus or home.

2. Pressures and challenges of teaching more students in larger groups.

3. Issuing the quality of learning and the teaching.

4. Student support issue.

5. It provides more effective IT transportation to universities.

Increasingly, therefore, the view is that a VLE system is a flexible tool which can be used to support an existing face-to-face course; to enhance an existing course with online activities; or to develop a completely online course delivered at a distance. Advantage of adopting one solution is that the product can be well supported by learning technology or IT services in the university. The disadvantage is that it may not provide for all possible uses.

A VLE may open up new routes of communication between departments, supporting an improved and developing relationship.

Operators in SQL

Operators are divided in to four categories.

1. Comparison operator

2. Arithmetic operator

3. Logical operator

4. Set operator

Comparison operator

Grater than (>)

Eg :

SELECT student_no

FROM student

WHERE mark>75;

Less Than

Eg :

SELECT student_no

FROM student

WHERE mark<40;

Less or Equal

Eg:

SELECT student_no

FROM student

WHERE mark <=40;

Equal

Eg:

SELECT student_no

FROM student

WHERE name = ‘Sanjaya’;

Not Equal

Eg:

SELECT student_no

FROM student

WHERE name <> ‘Sanjaya’;

Between

Eg:

SELECT student_no

FROM student

WHERE name, BETWEEN 85 AND 65

Not Between

Eg:

SELECT student_no

FROM student

WHERE name NOT BETWEEN ‘Sanjaya’ AND ‘CHANI’;

Like Operator

, ,

%----------------%

Begin Characters End

Like Operator is use for pattern machine (%) is use to match any string of length zero or more characters.

Sample Questions

Write a query for employee, the name starting with “m” that are in employee name column and include inside the employee table?

SELECT emp_name

FROM emp , ,

WHERE emp_name like m% ;

Write a query for employee, the name starting with “S” that are in employee name column and include inside the employee table and the name should be have four characters?

SELECT emp_name, emp_sal,emp_add

FROM emp_name , ,

WHERE emp_name Like S% _ _ _ _ ;

Write a program for employee, who are in the employee table and display their Name, Salary, and Commission. The employee in the who emp table, their name should be started with “M” and also have four characters?

Eg:

SELECT emp_name, sal, com

FROM emp , ,

WHERE emp_name like M %_ _ _ _ ;

Arithmetic operators

An arithmetic operator is a combination of one or more value, operators and function which evaluate a value.

* _ % +

Eg: SELECT emp_no, sal,sal*2”newsal”

FROM emp;

Out put

Emp_no

Sal

NewSal

1111

10500

21000

2222

5000

10000

Dual

It is a special table in the data dictionary call don my. It help’s to do the mathematics in SQL.

Eg: SELECT 10+20 “out put”

FROM dual;

Out put -

Out put

30

Logical Operators

1. AND

To satisfy the condition both must be true.

SELECT name, sal

FROM emp

WHERE name =’AA’ AND sal> 15000;

2. OR

To satisfy the condition one must be true.

SELECT name,sal

FROM emp

WHERE name=’AA’ SAL > 60000

3. NOT

It is use to reverse the result. It will execute if the condition is false.

SELECT *

FROM emp

WHERE NOT sal>10000;

Data types in Oracle

1. Number (size)

Store fixed and floating point numbers.

2. Chw (size)

Stored fixed length character. Specified length in byte can be stored up to 2000 characters.

3. Varcha (size)

This data type use to store variable length string having a maximum size up to 4000 bytes.

5. Date

It store date data, it’s has year, month, date, hours, minutes, & seconds. It can be displayed in various formats.

5. Long

It is a stranded data type can be stored up to 2GB.

Creating Tables

Syntax

CREATE TABLE table name

(Column 1 data type (size);

Column 2 data type (size));

Eg:

CREATE TABLE emp

(emp_no Number (10);

Name varcha (20);

Sal number (10));

How to Copy a Table?

Resources for copy a table

1. Backup the original

2. who archive them before remove

3. Give a copy some one else

Syntax

CREATE TABLE New table name

AS SELECT * FROM Old table name;

Eg:

CREATE TABLE emp1

AS SELECT * FROM emp;

How to add a column?

Syntax

ALTER TABLE table name

ADD column name data type (size);

Eg:

ALTER TABLE emp

ADD Nic No Number (10);

How to add multiple columns?

If you are adding more than one column the column definition should be enclosing parenthesis and separated by comas (‘).

ALTER TABLE emp

ADD (nic no number(10), DOB date);

How to drop a column?

Syntax

ALTER TABLE table name

DROP Column column name;

Eg:

ALTER TABLE emp

DROP COLUMN NIC_No;

How to modify a column?

Syntax

ALTER TABLE table name

MODIFY column name data type (Size);

Eg:

ALTER TABLE emp

MODIFY empno number (20);

How to drop a table?

Syntax

DROP TABLE table name

How to truncate table?

This command is a similar to drop command but is does not remove the structure of the table.

Syntax

TRUNCATE TABLE table name;

Eg:

TRUNCATE TABLE emp;

How to remove a table?

This is use to rename a table and other data base object such as views, stored procedure and functions.

Syntax

RENAME old table name to new table name

Eg:

RENAME emp to employee

Views

Views are virtual table, which use to data derived from different tables. Views provide simplicity as well as security.

Syntax

CREATE VIEW view name

AS SELECT column name1, column name2

FROM table name;

Eg

CREATE VIEW empview

AS SELECT empno, name

FROM emp;

How to drop views?

Syntax

DROP VIEW view name

Eg:

DROP VIEW empview

Constraints

Constraints are helping you to understand how tables and columns related to each other constraints define the action under which data is valid. Create table statements let you to enclose several different kind of constraints on a table such as candidate key, primary key, foreign key, and check conditions one or more constraints can be added to a table

Tag

Assignment Lanka Tag Cloud
Computer Networks The History of Local Area Networks, LAN, The Topologies of a Networks, LANs describe different types of transmission Medias, Local Area Networks Access Methods, Carrier Sense Multiple Access with Collision Detect, Development of LAN Technologies. LAN -Token Ring, LAN Ethernet Digital, LAN - Ethernet Sun microsystems, LAN - Ethernet Mixed Environment, LAN - Token Ring was introduced by IBM LAN - IBM implementation of Token Ring, Token Ring Novell, LAN Token Ring - in a mixed environment, LAN - Fiber Distributed Data Interface, LAN - ATM, LAN Components, LAN Switching Methods, Virtual Local Area Network, Port based VLAN, Mac based VLAN, Protocol based VLAN, User Base VLAN, PC networks Components, PC networks Shared resources, PC Network operating systems, PC networks Novell Netware, PC networks Windows NT, PC networks IBM LAN Server Computer Programming Languages HTML Language, The Generations of Programming Languages, Different types of High Level Languages, Different types of High Level Languages Disadvantages
Computer Networks - IBM LAN Server, Windows NT Networks, Novell Netware, Network operating systems, Networks Shared, Networks Components, User Base, Protocol based, Mac based, Port based, VLAN, LAN Switching, LAN Components, ATM, Fiber Data, Token Ring, Token Ring Novell, IBM implementation, Ethernet, Sun microsystems, Ethernet Digital, Token passing, LAN Technologies, CSMA/CD, Access Methods, Transmission, Networks, The History of Local Area Networks, LAN