1. Structured Systems Analysis and Design Methodology
SSADM
Structured Systems Analysis and Design Methodology

2. Life Cycle Phases Planning Feasibility Study Analysis Design
Code and Unit test 4

3. Stages 0. Feasibility 1. Analysis - Current systems and problems /
requirements
2. Business system option
3. Define requirements - specify
4. Technical Systems Options
5. Logical system design
6. Physical system design

4. Feasibility Prepare for feasibility study Define the problem
Select Feasibility Options
Assemble Feasibility Report

5. 010 Prepare for feasibility study.
Context Diagram
Current Physical Level-1 DFD
Overview LDS (Logical Data Structure)
Requirements Catalogue
i.e. a list of all requirements

6. 020 Define the problem.
Outline current and required environment description
Requirement catalogue
User Catalogue
Problem Definition Statement

7. Feasibility 030 Select Feasibility Options
Action Plan
Feasibility options
040 Assemble Feasibility report
Feasibility study report

8. Investigation of Current Environment
110 Establish Analysis framework
Requirements catalogue
Context diagram
Current Physical DFD, level 1
Overview LDS
Agreed Systems Analysis and Design Method
120 Investigate and define requirements
User Catalogue
130 Investigate current processing
Current physical DFM

9. 140 Investigate current data
Current Environment LDM
150 Derive logical view of current services
Context diagram
Logical Data Store / Entity Cross-Reference
Logical DFM
Requirements Catalogue
160 Assemble Investigation Results
Current Services Description
User Catalogue

10. Data Store / Entity Cross-Reference
This is a matrix, with data stores across the top and entities down the side.
Data Store / Entity
Diary
Dog Chart
Journal
Payment X
Dog
Stay
Owner

11. Business System Option
210 Define Business System Options
220 Select Business System Option

12. Requirements Definition
310 Define required system processing
Required system Logical LDM
User Roles
320 Develop Required Data model
Produces the Required system LDM
330 Derive System Functions
I/O structures
User Role/Function Matrix
Function Definitions

13. 340 Enhance Required Data model 350 Prototype I/O Interface
Required system LDM
350 Prototype I/O Interface
Menu and command structures
Prototyping report
360 Develop Processing Specification
ELHs
ECDs (Effect correspondence diagrams)
EAPs (Enquiry access paths)

14. 370 Confirm System objectives
Function Definition
Required System LDM
380 Assemble Requirements Specification
Requirements Specification

15. Technical Systems Options
410 Define TSOs
420 Select TSO

16. Logical System Design 510 Design user dialogues
Dialogue structure
Dialogue-level help
Dialogue control table
Menu Structure
Command structure
520 Define update processing
ELHs
Entity Descriptions
Update Process Models
530 Define Enquiry Processing
Enquiry Process Models
540 Assemble the Logical Design
Logical Design

17. Physical System Design
610 Prepare for Physical design
Application Development Standards
620 Create Physical data design
First cut Physical data design
630 Create Function component Implementation map
FCIM
Function definitions
640 Optimise Physical Data design
Function Definitions
Physical Data design, optimised
Space estimation
Timing Estimation 

18. 650 Complete function specification
FCIM
Function definitions
660 Consolidate Process Data Interface
670 Assemble Physical Design
Physical Design