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Chapter 3 (CONDUCT PRELIMINARY ANALYSIS) (#INTERVIEWS (STEP 4 - Prepare…
Chapter 3
(CONDUCT PRELIMINARY ANALYSIS)
System Analysis
:check: To understand the proposed project,ensure that it will support business requirements, and build a solid foundation for system development.
FUNCTIONAL DECOMPOSITION DIAGRAM
Decomposition is the
process of breaking complex entities into smaller sub-parts
and then breaking those smaller parts down even more.
ADVANTAGE
Functional Decomposition is an intuitive process for most people and is really understood process for most people and is readily understood by the customer
Helps to discover duplicate or overlapping activities or overlapping activities.
DISADVANTAGE
is internally focused (what are we currently doing versus what should we be doing
It can be easy to define too much detail
WHAT IS UML
The Unified Modelling Language (UML) is a widely used method of visualizing and documenting software systems design.
USE CASE DIAGRAM
A use case diagram represents the interaction between users and the information system.
The user become an actor, with a specific role that describes how he/she interacts with the
System Requirements Checklist
# input
Manufacturing employees must swipe their ID cards into online data collection terminals that record attendance
#output
The Web site must report online volume statistics every four hours, and hourly during peak periods
#process
The student records system must calculate the CGPA at the end of each semester
#performance
The system must support 25 users online simultaneously
#Controls/Security
An employee record must be added, changed, or deleted only by a member of the human resources department/ or system administrator.
#INTERVIEWS
STEP 4
- Prepare for the interview
STEP 3
- Develop Interview Questions
STEP 5
- Conduct the Interview
STEP 2
- Establish Objectives for the Interview
STEP 6
- Document the Interview
STEP 1
- Determine the People to Interview
STEP 7
- Evaluate the Interview
#DOCUMENT REVIEW
#OBSERVATION
#QUESTIONNAIRES AND SURVEYS
#SAMPLING
#RESEARCH
FACT FINDINGS