ELEMENTS OF ANALYSIS MODEL

The analysis Model is a technical representation of the software. It acts as a link between system description and design model.

  1. DATA DICTIONARY: It is a repository that consists of a description of all data objects used or produced by the software.
  2. ENTITY RELATIONSHIP DIAGRAM (ERD): It depicts the related activities. The attributes of each object in the Entity Relationship Diagram can be described using data object description.
  3. DATA FLOW DIAGRAM (DFD): It depicts the functions that transform data flow and it also shows how data is transformed when moving from input to output.
  4. STATE TRANSITION DIAGRAM (STD): It shows various modes of behavior (states) of the system and also shows the transitions from one state to another state in the system.
  5. PROCESS SPECIFICATION: It stores the description of each function present in the Data Flow Diagram (DFD). It describes the input to a function, the algorithm, that is applied to the input, and the output, that is produced.
  6. CONTROL SPECIFICATION: It stores additional information about the control aspect of the software. It is used to indicate how the software behaves when an event occurs and which processes are invoked due to the occurrence of the event.
  7. DATA OBJECT DESCRIPTION: It stores and provide complete knowledge about a data object present and used in the software. It also gives us the details of attributes of the data object present in the Entity Relationship Diagram (ERD).

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