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DFD Hierarchy and ERD Symbols Quiz

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Questions and Answers

Which symbol in an entity relationship diagram (ERD) represents a process?

A circle

A rectangle

A diamond (correct)

An oval

What is the purpose of a physical process model?

To represent the actual implementation of processes (correct)

To document the logical flow of data

To identify entities and their relationships

To capture business rules and constraints

Which stage of the Systems Development Life Cycle (SDLC) involves programming and testing?

Analysis

Planning

Implementation (correct)

Design

What is the purpose of process decomposition?

To break down a complex process into smaller, more manageable parts Signup and view all the answers

Which of the following techniques is used to capture business rules and constraints in an entity relationship diagram (ERD)?

Applying cardinality notations to relationships Signup and view all the answers

In a data flow diagram (DFD), what does a double line represent?

A data store Signup and view all the answers

Which of the following is a characteristic of object-oriented systems analysis and design (OOSAD)?

Use-case driven Signup and view all the answers

What is the purpose of the Planning phase in the Systems Development Life Cycle (SDLC)?

To initiate the project and assess feasibility Signup and view all the answers

In an entity relationship diagram (ERD), what does a diamond symbol with a solid line represent?

An identifying relationship Signup and view all the answers

What is the purpose of the Design phase in the Systems Development Life Cycle (SDLC)?

To determine the design strategy and design system components Signup and view all the answers