An entity relationship diagram (ERD):
A)Is a use-case diagram enhanced graphically to show data and process modeling
B)Is a high-level CASE diagram of data modeling used in business systems
C)Is an illustration of external data flows to and from a business systems
D)Is a picture that shows the information that is created,stored and used by a business system
E)Is a graphical display of the processes in a business system

Question

Quizplus · Accepted Answer

An entity relationship diagram (ERD) is a picture that shows the information that is created, stored, and used by a business system. ERDs are used in database design to illustrate relationships between entities, attributes of entities, and keys for identifying entities. Option A refers to a use-case diagram, which is a different type of diagram used for modeling processes. Option B refers to a CASE (computer-aided software engineering) diagram, which is not specific to ERDs. Option C refers to a data flow diagram (DFD), which is used for illustrating external data flows in a business system. Option E refers to a process flow diagram, which is used for showing the steps in a process.

An Entity Relationship Diagram (ERD)