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System Analysis Modern e-mail systems are based on a store-and-forward model in which e-mail computer server systems, accept, forward, or store messages on behalf of users, who only connect to the e-mail infrastructure with their personal computer or other networkenabled device for the duration of message transmission or retrieval to or from their designated server. Rarely is e-mail transmitted directly from one user's device to another's. While, originally, e-mail consisted only of text messages composed in the ASCII character set, virtually any media format can be sent today, including attachments of audio and video clips.

System analysis is the branch of electrical engineering that characterizes electrical systems and their properties. Although many of the methods of system analysis can be applied to non-electrical systems, it is a subject often studied by electrical engineers because it has direct relevance to many other areas of their discipline, most notably signal processing and communication systems.

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System Design Systems design is the process or art of defining the architecture, components, modules interfaces, and data for a system to satisfy specified requirements. One could see it as the application of systems theory to product development. There is some overlap and synergy with the disciplines of systems analysis, systems architecture and systems engineering.

Systems design is the process or art of defining the architecture, components, modules, interfaces, and data for a system to satisfy specified requirements. One could see it as the application of systems theory to product development. There is some overlap and synergy with the disciplines of systems analysis, systems architecture and systems engineering.

Major System Design Activities are

1. DB design
2. Program design
3. System & program test preparation
4. System Interface Specification
5. Audit Consideration
6. Audit control & Documentation control

Major design process parts are

1. O/p design
2. I/p design
3. File Design
4. Procedure design
   - Computer design
   - Non-computer design
5. Control design

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System Analyst
Systems analyst is responsible for researching, planning, coordinating and recommending software and system choices to meet an organization's business requirements.

The systems analyst plays a vital role in the systems development process. A successful systems analyst must acquire four skills: analytical, technical, managerial, and interpersonal.

Analytical skills enable systems analysts to understand the organization and its functions, which helps him/her to identify opportunities and to analyze and solve problems.

Technical skills help systems analysts understand the potential and the limitations of information technology. The systems analyst must be able to work with various programming languages, operating systems, and computer hardware platforms.

Management skills help systems analysts manage projects, resources, risk, and change. Interpersonal skills help systems analysts work with end users as well as with other analysts, programmers, and other systems professionals.
Systems analysts may act as liaisons between vendors and the organization theyrepresent. They may be responsible for developing cost analyses, design considerations, and implementation time-lines. They may also be responsible for feasibility studies of a computer system before making recommendations to senior management.

Basically a systems analyst performs the following tasks:

• Interact with the customers to know their requirements
• Interact with designers to convey the possible interface of the software
• Interact/guide the coders/developers to keep track of system development
• Perform system testing with sample/live data with the help of testers
• Implement the new syste