SE Chapter 4

Requirement structuring is in what phase of software development?

• Planning

• Ananlysis

• Design

• Implementation

• Maintenance

Which statement is/are TRUE about process modeling?

• Graphically represent processes that capture, manipulate, store, and distribute data between a system and its environment and among system components.

• Utilize information gathered during requirements determination,

• Process and data structures are modeled

• All of the above

Whic of the following is/are NOT Gane and Sarson symbols for DFD?

• 
• 
• 
• 

A general rule in data flow diagram is that certain processes may have the same name.

• True

• False

What is the conservation principle in balancing DFD?

• It states that input and outputs to a process should be conserved when decomposed to a lower level

• It is a mathematical theorem in calculus

• It refers to the preservation of natural resources

• It is a principle related to energy

What is the primary purpose of a data flow diagram (DFD)?

• To represent the physical structure of a system

• To illustrate how data moves through a system

• To define the user interface of a system

• To document the coding standards of a project

In a DFD, what does a data store represent?

• A process that transforms data

• A source or destination of data

• A repository for storing data

• A flow of data between processes

Which of the following is NOT a component of a data flow diagram?

• Processes

• Data flows

• Data stores

• Code modules

What is the purpose of a context diagram?

• To show the data flows

• To analyze the process

• To show the scope of the system

• To design architectural blueprint

What is the error of this DFD?

• Process has no output

• Entity should not connect to another entity

• Process has no input

• Entity should not connect directyly to data store