DBC_CHAPTER 4

ERD stands for __________

• Entity Roles Diagram

• Entity Relationship Diagram

There are 3 notation used in developing ERD:

• Chen, Crow's Foot, UML

• entity, attributes, relationship

The following figure refer to _____.

• Chen Notation

• UML Notation

STUDENT, SUBJECT and CLASS can be classified as :

• Entities

• Attributes

IDNumber, Name and Gender can be classified as :

• Entities

• Attributes

A _____ attribute is an attribute whose value is calculated from other attributes .

• derived

• composite

Choose the CORRECT cardinality :

• Many to one

• One to many

Which attributes is suitable to be PRIMARY KEY for COURSE ?

• Course_code

• Credit_hour

"Assigned" in the diagram refer to :

• verb phrase

• word phrase

In relationship degree, when two entities are associated, it is known as :

• Unary relationship

• Binary relationship