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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.

Delete
None of these
Update
Sort Key
Index

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Introduction to Database System
A recursive relationship is a relationship between an archetype and an instance of that archetype.

False
True

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Introduction to Database System
To have a file hold a list, it is necessary to

identify the name, width and type of the fields of each record.
decide which fields will be used as sort or index keys
All of the listed here
identify the records in the list

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Introduction to Database System
The data dictionary tells the DBMS

what attribute are possessed by the data
what these files contain
All of the listed here
what files are in the database

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Introduction to Database System
The model for a record management system might be

a business form
a Rolodex card file
handwritten list
None of these
All of these

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Introduction to Database System
The only reason for the existence of relations is to store instances of functional dependencies.

True
False

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