MCQ IN COMPUTER SCIENCE & ENGINEERING

COMPUTER SCIENCE AND ENGINEERING

SQL

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

In the ER model, what denotes a Relationship between the entities?

A	Double ellipse.
B	Diamond
C	Rectangle.
D	Circle

Explanation:

Detailed explanation-1: -In the ER diagram the relationship between two strong entity set shown by using a diamond symbol. The relationship between one strong and a weak entity set shown by using the double diamond symbol. The connecting line of the strong entity set with the relationship is single.

Detailed explanation-2: -Rectangles represent Entity sets, diamonds represent Relationship sets and ovals represent Attributes of entities or relationships.

Detailed explanation-3: -Explanation: Diamonds represent relationship sets in an ER diagram. Relationship sets define how two entity sets are related in a database. Explanation: The double diamonds represent the relationship sets linked to weak entity sets.

Detailed explanation-4: -The diamond shape showcases a relationship in the ER diagram. It depicts the relationship between two entities. In the example below, both the student and the course are entities, and study is the relationship between them.

Detailed explanation-5: -An entity relationship diagram (ERD), also known as an entity relationship model, is a graphical representation that depicts relationships among people, objects, places, concepts or events within an information technology (IT) system.

There is 1 question to complete.