Simple Mail Transfer Protocol (SMTP)

A member of the TCP/IP suite of protocols that governs the exchange of electronic mail between message transfer agents.

Network News Transfer Protocol (NNTP)

A member of the TCP/IP suite of protocols used to distribute network news messages to NNTP servers and clients (newsreaders) on the Internet. NNTP is designed so that news articles are stored on a server in a central database, thus enabling a user to select specific items to read.

File Transfer Protocol (FTP)

A member of the TCP/IP suite of protocols, used to copy files between two computers on the Internet. Both computers must support their respective FTP roles: one must be an FTP client and the other an FTP server.

Transmission Control Protocol/Internet Protocol (TCP/IP)

A set of networking protocols widely used on the Internet that provides communications across interconnected networks of computers with diverse hardware architectures and various operating systems. TCP/IP includes standards for how computers communicate and conventions for connecting networks and routing traffic.

Internet Protocol (IP )

A routable protocol in the TCP/IP protocol suite that is responsible for IP addressing, routing, and the fragmentation and reassembly of IP packets.

Features Of ASP.Net (with c#.Net script and)

The active server pages is a scripting language which can be defined as a particular syntax used to execute command on a computer.one can use one of the four programming languages to accomplish the cause.

1 C#.Net, 2 A.S.P.Net, in this project, the scripting language used is visual basic.Net script embedded with the code of html. How it works? The client (the web browser), locates the web server specified by the first part of the U.R.L (www.gadgetgallery.com). The client then requests the A.S.P page, specified by the second part of the url(/default. asp).The web server reads the A.S.P.Net file and process the code to get the data from a database. A.D.O is being used on the server to actually retrieve the data from database.

After the A.S.P.Net page has been completely processed by the web server, the output is sent in html format to the client. The client receives the html format and renders it for the user.

Features of c#.Net script

Vb.Net script is generally considered easier to learn.so we didn’t used java script for server side scripting. Since visual basic script is based on the popular visual basic and we were familiar to visual basic so the transition was easier. Visual basic script is also the default language for asp.net.

Features Of Xml

XML is called so because it has a variable format (not fixed like html) and can be extended. xml specifies the standard with which one can define ones own markup language with their own sets of tags. One can create ones own tags, which actually relates to its own content. Therefore sometimes it is called Meta language i.e. `is a language which can be used to describe other languages. Some important components of xml are:

DTD (document type definition)

. Style sheets (css and xsl)

. Parsers

We used it for creating style sheets

Style sheets

These are a means to control presentation. They contain the declaration how a document should appear. These style sheet can be written using css (cascading style sheets) and xsl(extensible style sheets).the style sheet is to be used when the data is being displayed for human interpretation. The output device may vary from screen to brail editor.

Features of SQL SERVER 2005

SQL SERVER 2005 provides one of the best security features among all RDBMS. With low cost and common availability in spite of having oracle as an option it was better to use SQL server 2005. As we know that the database is a repository for stored, operational data in a database environment and common data are available and used by several users. Instead of each program (or user) to manage its own data, the data across applications are shared by all authorized users with the help of database software managing the data as an entity.

The general concept behind a database is to handle information as an integrated whole. A database is a collection of interrelated data stored with minimum redundancy to serve many users quickly and effectively. The general objective is to make information easy, quick, expressive, and flexible for the user. In database design specific objectives are considered: -

1 Ease of learning and use.

2 More information at low cost.

3 Accuracy and integrity.

4 Recovery from failure.

5 Performance.

In this way, S.Q.L server 2005 is one of the leading R.D.B.M.S. software in the world. It is characterized by the quick retrieval of information from huge tables. This quality allows it to cater to the ever-changing business needs of the present age. It supports fourth generation language, SQL, thereby making it easier for the customers to grasp it, a development language where complicated procedures, functions etc. can be used.

The S.Q.L server 2005 include following features:

· Queries

· Constraints

· Procedures

· Triggers

· batch implementation

· functions

· bulk copy utility

· cursers

· stored procedures

5.3.3 Economical Feasibility:

Economic feasibility is the most frequently used technique for evaluating the effectiveness of the proposed system. More commonly known as cost/benefit analysis, the procedure is to determine the benefits and savings that are expected from the proposed system and compare them with the costs. If the benefits outweigh costs, a decision is taken to design and implement the system otherwise further justification or the alternative in the proposed system will have to be made if it is to have a chance of being approved. This outgoing effort improves in accuracy at each phase of the system development life cycle.

Classification of Costs & Benefits: The various cost expected to incur & benefit expected to realize are given below.

Tangible or Intangible Costs & Benefits: Tangibility refers to the ease with which costs or benefits can be measured. An outlay of cash for a specific item or activity is referred to as a tangible cost. They are shown as disbursements on the books. The purchases of hardware or software, personnel training are examples of tangible costs. They are readily identified and measured.

Costs that are known to exist but whose financial value cannot be accurately measured are referred to as an intangible costs. Benefits are also classified as tangible or intangible. Like costs, they are often difficult to specify accurately. Tangible benefits such as saving of material cost are quantifiable. Intangible benefits such as improved institution image is also taken into account in the system evaluation process.

Direct or Indirect Costs & Benefits: Direct costs are those with which a monetary figure can be directly associated in a project. They are applied directly to the operation. Direct benefits can also be specified to the given project. Indirect costs are the results of operation that are not directly associated with the given system or activity. They are often referred to as overhead. Light, air conditioning, maintenance, protection of the computer center is all tangible costs, but it is difficult to determine the proportion of each attribute to a specific activity. Indirect benefits are realized as a by-product of another activity or system.

Fixed and Variable Costs and Benefits: Some costs and benefits are constant, regardless of how well a system is used. They are constant and do not change. Once encountered they will not reappear. In contrast, variable costs are incurred on a regular basis. They are proportion to work volume and continue as long as is in operation. For example, the cost of printer paper and cartridge. Fixed benefits are also constant and do not change. The variable benefits, on the other hand, are realized on a regular basis. For example, the system will save several hours of employees in preparing each report, which otherwise was prepared manually. Another examples are error free data entry, help about different topics and ease of use.

5.3.4 Operational Feasibility:

Proposed projects are beneficial only if they can be turned into information system that will meet the operating requirements for which they are designed and developed. It is mainly related to human organizational and political aspects. People are resistant to change, and computers have been known to facilitate change. Findings of operational feasibility analysis can be summarized as given below:

· Since the audiences are million of netigen who use it for information retrieval. So their will be many who will be benefited with this project

· End users are always welcome to have the technical support on the site.

Дата добавления: 2015-10-21