Structured Systems Analysis and Design Method

Introduction

SSADM is a methodology for analysis and design of information systems.

SSADM techniques

• Logical Data Modeling: This is the process of identifying, modeling and documenting the data requirements of the system being designed. The data are separated into entities and relationships.
• Data Flow Modeling: This is the process of identifying, modeling and documenting how data moves around an information system. Data Flow Modeling examines processes, data stores, external entities and data flows.
• Entity Behavior Modeling: This is the process of identifying, modeling and documenting the events that affect each entity and the sequence in which these events occur.

Stages

• Stage 0 - Feasibility study
• Stage 1 - Investigation of the current environment
• Stage 2 - Business system options
• Stage 3 - Requirements specification
• Stage 4 - Technical system options
• Stage 5 - Logical design
• Stage 6 - Physical design