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Introduction to Database System

Introduction to Database System
Helping people keep track of things is the purpose of a(n) ________ .

relationship
database
instance
table

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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 file
data record
data field
None of these

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Introduction to Database System
In SQL, which command is used to remove a stored function from the database?

DROP FUNCTION
None of these
DELETE FUNCTION
REMOVE FUNCTION
ERASE FUNCTION

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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?

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

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Introduction to Database System
Versatile report generators can provide

Subtotals
Columnar totals
None of these
Calculations
All of these

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Introduction to Database System
A list consists of last names, first names, addresses, and pin codes if all people in the list have the same last and the same pin code, a useful key would be

the pin code
the last name
None of these
All of these
a compound key consisting of the first name and the last name

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