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Introduction to Database System

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.

None of these
Update
Sort Key
Delete
Index

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Introduction to Database System
Which of the following is a database administrator's function?

backing up the database
performance monitoring
database design
All of the listed here

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Introduction to Database System
Each of data files has a _____ that describe the way the data is stored in the file.

File structure
Fields
Database
Records

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Introduction to Database System
A ____ Contains the smallest unit of meaningful data, so you might call it the basic building block for a data file.

Database
Records
File structure
Fields

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Introduction to Database System
If attribute A determines both attributes B and C, then it is also true that:

(B,C) →
C →
B →
A →

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Introduction to Database System
A maximum cardinality is the maximum number of entity instances that can participate in a relationship instance.

True
False

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