Методическое пособие по развитию навыков чтения и говорения на английском языке для студентов
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- Text A: System Life Cycle
- 1. Read the questions and circle the correct answer.
- 2. Match the words with their synonyms.
- 3. Read the sentences choosing the correct word in bold type. 1) A new information system is designed/designated
- 5. Find the answers to the questions.
UNIT IV: INFORMATION SYSTEMS ANALYSIS
Text A: System Life Cycle
System life cycle is an organizational process of developing and maintaining systems. It helps in establishing a system project plan, because it gives overall list of processes and sub-processes required developing a system. System development life cycle means combination of various activities. Following are the different phases of system (or software) development life cycle: system study, feasibility study, system analysis, system design, coding, testing, implementation, maintenance.
System Study gives a clear picture of what actually the physical system is. In practice, the system study is done in two phases. In the first phase, the preliminary survey of the system is done which helps in identifying the scope of the system. The second phase of the system study is more detailed and in-depth study in which the identification of user's requirements and the limitations and problems of the present system are studied. After completing the system study, a system proposal is prepared by the System Analyst and placed before the user. The proposed system contains the findings of the present system and recommendations to overcome the limitations and problems of the present system in the light of the user's requirements. System study phase passes through the following steps: problem identification and project initiation, background analysis, inference or findings.
Feasibility Study. The feasibility study is basically the test of the proposed system in the light of its workability, meeting user's requirements, effective use of resources and the cost effectiveness. The main goal of feasibility study is not to solve the problem but to achieve the scope. In the process of feasibility study the cost and benefits are estimated with greater accuracy.
1. Read the questions and circle the correct answer.
1. What are the phases of a system development life cycle?
a) system study, feasibility study, system analysis and design
b) system analysis, system design, coding, testing
c) system study, feasibility study, system analysis, system design, coding, testing, implementation, maintenance
d) planning phase, analysis phase, design phase, implementation phase
2. What phases does the system study contain?
a) the preliminary survey and in-depth study of the present system
b) identification of the scope of the system and meeting user’s requirements
c) assembling the project team, justifying a project
d) choosing development methodology, developing a project schedule
3) What are the steps in the system study phase?
a) problem identification, project initiation, background analysis
b) problem identification, project initiation, background analysis, inference
c) background analysis, producing a Project Development Plan
d) description of the project, estimation of the project costs and financial benefits
4) What does a system proposal include?
a) a short description of the project scope, a list of project team participants
b) findings of the present system and recommendations to overcome the limitations and problems of the present system
c) a schedule for the project, including an outline of its phases
d) analysis of information requirements, designing new information systems
5) What are the basic goals of the feasibility study?
a) meeting customer’s requirements
b) effective use of resources, the cost effectiveness
c) achieving the scope
d) all of the above
3. Read the sentences choosing the correct word in bold type.
1) A new information system is designed/designated to replace a system or process that is already in place.
2) To obtain adding/additional information about the current system, project team members can interview people who use the system or observe the system in action.
3) It is important to study the current system to understand its strong/strengths and weaknesses/weak before planning a new system.
4) The project team usually documents the current system used to/using diagrams.
5) A new or updated information system should meet the requires/requirements the project team defines.
6) The members of the project team can use a variety of techniques, such as interviews and data analysis, to identical/identify/identification problems and opportunities.
4. Give the Russian equivalents.
5. Find the answers to the questions.
1) How does System Life Cycle help in establishing a system project plan?
2) What activities does System Development Life Cycle involve?
3) What helps to identify the scope of the system?
4) Why is the second phase of the system study more detailed?
5) Who prepares a system proposal and when?
6) What kind of test is the feasibility study considered to be?