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
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