13.3 Traditional systems dev life cycle

Question 1

What is sdlc

Answer 1

systems development life cycle

Question 2

whata re the 6 processes in sdlc

Answer 2

1) systems investigation
2) systems analysis
#) systems design
4) programming and testing
5) implementation
6) operation and maintenance

Question 3

if there are errors in one stage of sdlc

Answer 3

devs go back to the last stage

Question 4

who is on the development teams

Answer 4

users, system analysts, programmers, and technical specialists

Question 5

who are users on the devlelopment teams

Answer 5

employees from diff functional areas

Question 6

what are system analysts

Answer 6

IS progessionals who specifalize in analyzing and designing info systems

Question 7

what are programmers

Answer 7

IS progessionals who either modify existing programs or write new programs to satisfy user requriements

Question 8

who are technical specialists

Answer 8

experts on certain tech (Databases, or telecommunications)

Question 9

whoa re systems stakeholdershs

Answer 9

ALL people affected by company’s change in IS

Question 10

When do users have high involvement in the SDLC

Answer 10

early stages, and later stages

Question 11

When do Developers have involvement with the SDLC

Answer 11

more in the middle

-SYSTEMS DESIGN
-PROGRAMMING AND TESTING
-Implementation

Question 12

First step of SDLC: Systems Investigation

Answer 12

the more time they invest in
1) understanding the business problem to be solved
2) specifying the technical options for the systems
3) anticipating the problems they are likely to encounter during development, the greater the chance of success

Question 13

what does SYSTEMS INVESTIGATION do

Answer 13

address the business problem/ business opportunity, by using the FEASIBILITY study!

Question 14

What are 3 solutions the org has to any business problem

Answer 14

1) do nothing and continue to use the existing system
2) modify or enhance the existing system
3) develop a new system

Question 15

what is the feasibility study

Answer 15

analyzes which of 3 solutions best fits a business problem

analyzes, technical economic and behavioural feasibility

Question 16

SDLC stage one: what is technical feasibility

Answer 16

can the company develop/acquire the hardware, software and communications components needed to solve the business problem?

Question 17

SDLC stage one: economic feasibility

Answer 17

determines whether the project is an acceptable financial risk, wether the org has necessary time and money to succesfully complete the project

(examples of tests: NPV, ROI, breakeven analysis, business case approach)

Question 18

Behavioural feasibility:

Answer 18

addresses the human issues of the systems dev project

Question 19

What does the go/no-go decision (in SDLC stage one) depend on

Answer 19

the feasibility study

Question 20

what are all of the systems acquistion methods

Answer 20

1) SDLC (traditional systems dev)
2) Prototyping
3) Joint Application Design (JAD)
4) Integrated computer assisted seng (ICASE)
5)Rapid App Dev
6) end user dev
6) Object-oriented dev

Question 21

LOOK AT TABLE 13.2

Answer 21

please it is so big and for what

Question 22

stage 2 SDLC: Systems Analysis

Answer 22

process when systems analysts examine business problems, gather info about existing system, or find requiments of a new system

this stage creates a DELIVERABLE!!! part of the system requirments

Question 23

Stage 3 of SDLC: systems design:

Answer 23

describes how the system will resolve the business problem

this stage creates the technical system specifications:
-system outputs, inputs, etc
-hardware, software, databases
-blueprint of how these components are integrated

once specifications are approved, they are FROZEN to prevent scope creep

Question 24

what is it called when you are adding functions after project begins

Answer 24

SCOPE CREEP!!! time frame and expenses associated w the project expand beyond limits

Question 25

is scope creep good?

Answer 25

NO!! increases the time and budget of the project

Question 26

Stage 4 SDLC: programming and testing

Answer 26

translating design dpecifications into code! only happens if company is doing programming in house

Question 27

Stage 5 of SDLC: implementation/deployment

Answer 27

process of converting old computer system into a new one, end users and MIS dept work together to implement change

3 types of implementation +1 not used today:
a) direct conversion
b) pilot conversion
c) phased conversion
d) parallel conversion

Question 28

direct conversion

Answer 28

old system is cut off and new system turned on at SAME TIME

(CHEAPEST CONVERSION) (rISKIEST CONVERSION BC old system is not there)

Question 29

pilot conversion

Answer 29

new system introduced in part of org, and after a period of time, then the whole org adopts it!!!

Question 30

phased convversion

Answer 30

company introduce individual modules of convesion in stages

Question 31

what sort of conversion do most companies do

Answer 31

DIRECT conversion

Question 32

what sort of conversion do large companies do

Answer 32

combo of phased and pilot conversion

Question 33

parallel conversion

Answer 33

old and new systems operate together for a while, but this strategy is not used today!

doing everything 2x is wasteful

Question 34

Stage 6 of SDLC: operation and maintenance

Answer 34

the new system is used, until one day it needs to changee, then we will restart cycle

also we might have to do some maintenance like debugging, updating, and adding new functions