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Introduction to Database System

Introduction to Database System
Applications are programs that interact directly with the database.

True
False

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Introduction to Database System
If you want to organize a file in multiple ways, it is better to _____ the data rather than to sort it.

Sort Key
None of these
Update
Delete
Index

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Introduction to Database System
A _____ means that one record in a particular record type may be related to more than one record of another record type.

One-to-many relationship
One-to-one relationship
Many-to-one relationship
Many-to many relationship

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Introduction to Database System
An identifier determines the type of relationship that an entity has.

True
False

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

True
False

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Introduction to Database System
The modify operation is likely to be done after

Look-up
None of these
Delete
Insert
All of these

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