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Test your knowledge in Entity Relationship Diagram Flashcards | StudBud
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Test your knowledge in Entity Relationship Diagram
Test your knowledge in Entity Relationship Diagram
12 terms
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StudBud Administration
Test your knowledge in ERD. #modellingtechnique #erd #entityrelationshipdiagra
Flashcards
12 cards
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Questions
12
Answers
1
Attributes are represented by ovals.
FALSE
TRUE
2
One important aspect about E-R Diagrams are that it enable designers and users to express....
their understanding of how the GUI is intended to be
their understanding of how to destroy the db
their understanding of what the planned db is intended to do
3
The goal with the Entity Relationship Model is to
Facilitate a programming method
Facilitate how a database design should look like
Facilitate organizational learningbehaviour
4
Relations are represented by rectangles
FALSE
TRUE
5
Entities are represented by rectangles
FALSE
TRUE
6
What is an Attribute?
An attribute is the smallest piece of information in an ERD
An attribute is an objects or concepts that can store data
An attribute is used to represent the relationship entities
7
How can you uniquely identify every record in a table?
Foreign Key
Relationship
Primary Key
Column name
8
Recursive relationships is a relationships between an entity and itself.
TRUE
FALSE
9
What is the idea behind E-R Diagrams, that was developed By Peter Chen?
A tool that can be used to detect programming errors.
A tool that can capture semantic errors in HTML
A tool for communication between designers and users.
10
The basic components of a Entity-Relationship Model include:
Entity types, attributes, relationship types
Primary Key, Storage details, attributes
Column name, Security key, File types, Attributes
11
Cardinality describes how many entity instances can be in the relationship
TRUE
FALSE
12
A relationship can have attributes
TRUE
FALSE
