Data and Process Modelling

What is the symbol in DFD that receives an input data and output data?

• data stores

• data flow

• processes

• entity

in Gane and Sarson symbols, which symbols represent the External Entity?

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• 
• 
• 

Which of DFD is/are correct

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• 
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the image show the combination that must be avoided. What is the name for this?

• Black Holes

• Spontaneous Generation

• Grey Holes

• atom

The first step in constructing DFD is to draw context diagram. What is the number of process in context diagram?

• 0

• 1

• 2

• 3

"it is the central storehouse of information about the system's data. its documented the details within DFDs." This represent?

• data element

• data item

• data structures

• data dictionary

The smallest piece of data element is called?

• data item

• data dictionary

• data structure

• record

In modular design, the image shows the structure of?

• Sequence

• Selection

• Iteration

• Array

Graphical Representation of the condition, actions, and rule is a?

• DFD

• Flowchart

• Decision Table

• Decision Trees

True or false, data store in DFD can communicate directly to other data store

• true

• false