COMPUTER APPLICATIONS
DATABASE MANAGEMENT SYSTEMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A diagram in the form of an image or symbol that identifies the type of entity in a system described in the data with its attributes, and explains the relationship or relations between these entities, is the meaning of____
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ERD
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CFD
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MAD
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DFD
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DAD
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Explanation:
Detailed explanation-1: -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.
Detailed explanation-2: -Entities are displayed as rectangles with rounded edges, attributes with one of three symbols inside the entity box, and relationships with various lines. Attributes can be shown in one of three ways: Unique identifier – Shown with a pound sign, or hashtag (#) Mandatory – This attribute is shown with an asterisk (*)
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