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Introduction to Database System

Introduction to Database System
After you _____ a record, many data management the environments require you to issue a command to save the changes you made.

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Introduction to Database System
An entity class is a collection of entities and is described by the structure of the entities in that class.

False
True

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

False
True

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Introduction to Database System
Prior to 1970, all data was stored in separate files, which were mostly stored on reels of magnetic tape.

False
True

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Introduction to Database System
A database design may be based on existing data.

True
False

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Introduction to Database System
The data-base environment has all of the following components except:

separate files
data base
users
None of these
data-base administrator

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