System analysis part2
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The document discusses the importance of telecommunications networks, highlighting their role as essential components of information systems in organizations. It covers systems analysis, emphasizing structured analysis and the role of system analysts in resolving business problems through the integration of technology and processes. Additionally, it outlines the skills necessary for system analysts, both interpersonal and technical.
System analysis part2
- 1. Introdaction to Python Dr. Mohammed Kassim Page 7 Systems analysis Information System Components Network Resources Telecommunications networks like the Internet, intranets, and extranets have become essential to the successful operations of all types of organizations and their computer-based information systems. Telecommunications networks consist of computers, communications processors, and other devices interconnected by communications media and controlled by communications software. The concept of Network Resources emphasizes that communications networks are a fundamental resource component of all information systems. Network resources include: • Communications media: such as twisted pair wire, coaxial cable, fiber- optic cable, microwave systems, wireless signal and communication satellite systems. • Network support: This generic category includes all of the people,
- 2. Introdaction to Python Dr. Mohammed Kassim Page 8 Systems analysis hardware, software, and data resources that directly support the operation and use of a communications network. Examples include communications control software such as network operating systems and Internet packages. Figure 1.4. Components Information Systems in process
- 3. Introdaction to Python Dr. Mohammed Kassim Page 9 Systems analysis Systems analysis Systems analysis is the dissection of a system into its component pieces for purposes of studying how those component pieces interact and work. Structured analysis was one the first formal strategies developed for systems analysis of information systems and computer applications. The models are structured pictures that illustrate the processes, inputs, outputs, and files required to respond to events. Structured analysis introduced an overall strategy that has been adopted by many of the other techniques – model-driven development. A model is a representation of reality. Just as ‘a picture is worth a thousand words,’ most models use pictures to represent reality. Model-driven development techniques emphasize the drawing of models to define requirements and system designs. The model becomes the design blueprint for constructing the final system. Figure 2.1. Systems model
- 4. Introdaction to Python Dr. Mohammed Kassim Page 10 Systems analysis System Analyst System Analyst is a specialist who studies the problems and needs of an organization to determine how people, data, processes, and information technology can best accomplish improvements for the business. System analyst understand both business and computing. They study both business problems and opportunities and then transform business and information requirements into specification for information systems that will be implemented by various technical specialists including computer programmers. System analyst initiates changes within an organization. Every new system changes the business.
- 5. Introdaction to Python Dr. Mohammed Kassim Page 11 Systems analysis System analyst is basically a problem solver. Problems may be either real or anticipated that require corrective action. Skills to be possessed by System Analyst An analyst must possess various skills to effectively carry out the job. They may be divided into 2 categories — interpersonal and technical skills. Interpersonal skills deal with relationship and the interface of the analyst with people in business. They are useful in establishing trust and resolving conflicts. Technical skills focus on procedures and techniques for operation analysis, system analysis and computer science.