Software engineering

A directed arc or line in DFD represents

• Data Store

• Data Process

• Data Flow

A DFD is always accompanied by a data dictionary.

• True

• False

Which of the following is a function of CASE Tool?

• Supporting Structured analysis and design (SA/SD)

• Maintaining the data dictionary

• Checking whether DFDs are balanced or not

Data Store Symbol in DFD represents a

• Physical file

• Data Structure

• Logical file

• All of the mentioned

The context diagram is also known as

• Level-0 DFD

• Level-1 DFD

• Level-2 DFD