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Introduction to Database System

Introduction to Database System
In SQL, which command is used to make permanent changes made by statements issue since the beginning of a transaction?

PACK
SAVE
COMMIT
ZIP

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

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

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Introduction to Database System
The data dictionary tells the DBMS

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

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Introduction to Database System
A candidate key is a determinant that determines all the other columns is a relation.

True
False

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Introduction to Database System
In a one-to-many relationship, the entity that is on the many side of the relationship is called a(n) ________ entity.

parent
subtype
instance
child

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Introduction to Database System
The on-line, softcopy display a customer's charge account to respond to an inquiry is an examples of a

exception report
regularly scheduled report
forecasting report
on demand report

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