Data flow is described by means of DFDs & represented in algebraic form - Delivering the System

Q.  What is described by means of DFDs as studied earlier and represented in algebraic form?
- Published on 22 Jul 15

a. Data flow
b. Data storage
c. Data Structures
d. Data elements

ANSWER: Data flow

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    Discussion

  • Nirja Shah   -Posted on 21 Oct 15
    - Data dictionary should contain information about the following

    1. Data Flow
    2. Data Structure
    3. Data Elements
    4. Data Stores
    5. Data Processing

    - Data Flow is described by means of DFDs as studied earlier and represented in algebraic form as described.
    = ----- Composed of
    {} ---- Repetition
    () ---- Optional
    + ---- And
    [ / ] ---- Or

    - Example

    Address = House No + (Street / Area) + City + State

    Course ID = Course Number + Course Name + Course Level + Course Grades

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