Exam 7: Using Data Flow Diagrams

By using combinations of only four symbols,the systems analyst is able to create a pictorial depiction of data flows that eventually can provide solid system:

Processes that transform data should be named with a noun which indicates the data that has been transformed.

The highest level data flow diagram is called Diagram 0.

When a process has all input or all output data flow,it means that an arrowhead is pointing in the wrong direction or there is a missing data flow.

Data flows occurring simultaneously can be depicted doing just that through the use of ________ arrows.

The data store symbol is simply showing a depository for data which allows addition or ________ of data.

What are the four advantages of using a data flow approach over narrative explanations of data movement?

Which of the following is not a reason for partitioning processes into separate programs?

An arrow is used to depict an external entity that can give and receive data from the system.

Why is partitioning useful when designing a Web site?

Ajax is a technique used to obtain data from a server and update large amounts of data using UML.

A CRUD matrix is used to show:

With a ________ approach,the diagrams move from general to specific.

A primitive process is:

More detail is achievable through using a process called "exploding the diagrams."

When the first ________ diagram is made,inputs and outputs are specified and these remain constant throughout all of the following diagrams.

Which graphically characterize(s)data processes and flows through a business system?

Each time an external company or system is involved:

Each time an external company or system is involved in the activities of a Web site,the process that handles them must be left alone without any partitioning.

The data flow approach enables the systems analyst to better understand the interrelatedness of ________ and ________.