The System Development Cycle

Question 1

-hardware, software, data, people, and procedures that work together to produce quality information.

Answer 1

Information system (IS)

Question 2

set of components that interact to achieve common goal.

Answer 2

system

Question 3

(phases of the system development cycle)
-review project requests
-prioritize project requests
-allocate resources
-identify project development team.

Answer 3

phase 1: planning

Question 4

(phases of the system development cycle)
-conduct preliminary investigation.
-perform detailed analysis activites:
–study current design
–determine user requirements
–recommend solution

Answer 4

phase 2: analysis

Question 5

(phases of the system development cycle)
-acquire hardware and software is necessary.
-develop details of system

Answer 5

phase 3: design

Question 6

-develop programs if necessary
-install and test new system
-train users
-convert to new system

Answer 6

phase 4: implementation

Question 7

-conduct post-implementation system review.
-identify errors and enhancements
-monitor system performance.

Answer 7

phase 5: support

Question 8

-arrange tasks into phases.
-involve users (anyone for whom system is being built)
-develop clearly defined standrds (proedures comapny expects employees to follow)

Answer 8

guidelines for system development

Question 9

-responsible for designing and developing information system.
-liaison between users and IT professionals

Answer 9

systems analyst

Question 10

-formed to work on project from beginning to end.
-consists of users, systems analyst, and other IT professionals

Answer 10

project team

Question 11

-one member of the team who manages and controls project budget and schedule.

Answer 11

project leader

Question 12

-measure of how suitable system development will be ot the comapny.

Answer 12

feasibility

Question 13

-operational feasibility
-schedule feasibility
-technical feasibility
-economic feasibility (a.k.a cost/benefit feasibility)

Answer 13

four feasibility tests

Question 14

-collection and summarization of data and information.
-includes reports, diagrams, programs, and other deliverables

Answer 14

documentation

Question 15

1. review documentation
2. observe
3. questionnaire
4. interview
5. joint-application design (JAD) session
6. research

Answer 15

data and information gathering techniques

Question 16

-to correct problem in existing system
-to improve existing system
-competition can lead to change
-outside group may mandate change

Answer 16

reasons to create or modify an information system

Question 17

-formal request for new or modified information system.
-also called project request

Answer 17

request for system services

Question 18

-begins when steering committee receives project request.

Answer 18

planning phase

Question 19

-decision-making body for the company.
-review and approve project requests
-prioritize project requests
-allocate resources
-form project development team for each approved project.

Answer 19

steering committee

Question 20

-conduct preliminary investigation, also called feasibility study
-perform detailed analysis

Answer 20

analysis phase

Question 21

-determine exact nature of problem or improvement and whether it is worth pursuing.
–findings are presented in feasibility report a.k.a feasibility study

Answer 21

preliminary investigation

Question 22

1. study how current system works
2. determine user’s wants, needs, and requirements
3. recommend solution

Answer 22

detailed analysis

Question 23

-access feasibility of each alternative solution
- recommends the most feasible solution for the project.
-presented to steering committee, which decides how system will be developed.

Answer 23

system proposal

Question 24

(possible solutions)
-prewritten software available for purchase

Answer 24

buy packaged software

Question 25

(possible solutions) -meets needs of many companies

Answer 25

horizontal market software

Question 26

(possible solutions) -designed for particular industry

Answer 26

vertical market software

Question 27

(possible solutions) -software developed at user's requests

Answer 27

write own custom software

Question 28

(possible solutions) -have outisde source develop software

Answer 28

outsource

Question 29

-acquire hardware and software -develop all details of new or modified information system

Answer 29

design phase

Question 30

-talk with other systems analysis -visit vendor's stores -surf web -read print and online trade journals, newspapers, and magazines

Answer 30

identify all hardware and software requirements of new or modified system

Question 31

(Basic documents used to summarize technical specifications) -identifies product(s) you want. -vendor quotes price(s) for listed product(s).

Answer 31

request for quotation (RFQ)

Question 32

(Basic documents used to summarize technical specifications) -vendor selects product(s) that meet(s) your requirements and then quotes price(s)

Answer 32

request for proposal (RFP)

Question 33

(Basic documents used to summarize technical specifications) -less formal method that uses standard form to request information about product or service

Answer 33

request for information (RFI)

Question 34

-references from vendor -talk to current users of products -product demonstrations -trial version of software -benchmark test measures performance

Answer 34

how systems analysts test software products

Question 35

-specifications for components in proposed solution -includes several activites --database design --input and output design --program design

Answer 35

detailed design

Question 36

-sample of inout or output that contains actual data

Answer 36

mockup

Question 37

-working model of proposed system -beginning a prototype too early may lead to problems

Answer 37

prototype

Question 38

-software tools designed to support activities of system development cycle

Answer 38

computer-aided software engineering (CASE)

Question 39

-purpose is to construct or build, new or modified system and then deliver it to users.

Answer 39

implementation phase

Question 40

(types of tests performed by system developers) -verifies each individual program works by itself

Answer 40

unit test

Question 41

(types of tests performed by system developers) -verifies all programs in applicatin work together

Answer 41

systems test

Question 42

(types of tests performed by system developers) -verifies application works with other applications

Answer 42

integration test

Question 43

-showing user excatly how they will use new hardware and software in system.

Answer 43

training

Question 44

-provide on going assistance after system is implemented

Answer 44

support phase