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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.

Sort Key
Index
Update
None of these
Delete

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Introduction to Database System
The language used in application programs to request data from the DBMS is referred to as the

DML
All of the listed here
query language
DDL

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Introduction to Database System
Which command(s) is(are) used to redefine a column of the table in SQL ?

DEFINE TABLE
MODIFY TABLE
all of the listed here
ALTER TABLE

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Introduction to Database System
One solution to the multivalued dependency constraint problem is to:

change the theme.
split the relation into two relations, each with a single theme.
create a new theme.
add a composite key.

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Introduction to Database System
An indexing operation

sorts a file using a single key
None of the listed here
sorts file using two keys
establishes an index for a file

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Introduction to Database System
In SQL, which command(s) is(are) used to create a synonym for a schema object?

CREATE SCHEMA
All of the listed here
CREATE SAME
CREATE SYNONYM

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