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Introduction to Database System

Introduction to Database System
One of the reasons why OODBMSs have not been widely used for business information systems is that OOP is obsolete.

True
False

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Introduction to Database System
Which type of entity cannot exist in the database unless another type of entity also exists in the database, but does not require that the identifier of that other entity be included as part of its own identifier?

Weak entity
ID-dependent entity
Strong entity
ID- independent entity

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Introduction to Database System
In SQL, the ALTER TABLESPACE command is used

to take a tablespace online/offline
All of the listed here
to add/rename data files
to change storage characteristics

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Introduction to Database System
A _____ Contains fields of data about one entity.

Record
None of these
Document
Fields
File

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Introduction to Database System
The functional dependency R → S means that the value of S can be determined when we are given a value of R.

False
True

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Introduction to Database System
In any hierarchy of data organization, the smallest entity to be processed as a single unit is called

database
data field
data file
None of these
data record

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