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Introduction to Database System

Introduction to Database System
Which of the following refers to something that can be identified in the user's work environment, something that the users want to track?

Relationship
Entity
Identifier
Attribute

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Introduction to Database System
Relations are categorized into normal forms according to the referential integrity constraints that they have.

False
True

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Introduction to Database System
When using a database management system, the first thing that you must do is to

create a database file
load the software into your micro¬computer
activate file editor
keep a floppy disk in readiness

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Introduction to Database System
Given the functional dependency R → S , R is called the determinant.

False
True

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Introduction to Database System
Keys made up of two or more attributes are called composite keys.

True
False

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Introduction to Database System
If you want to group the records in the abc database, you could use the Jobcode as the _____.

Delete
Index
Update
Sort Key

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