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Database Redesign

Database Redesign
Some organizations take the stand that no application should ever employ the true name of a table.

True
False

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Database Redesign
What SQL command can be used to add columns to a table?

MODIFY TABLE TableName ADD ColumnName
ALTER TABLE TableName ADD COLUMN ColumnName
MODIFY TABLE TableName ADD COLUMN ColumnName
ALTER TABLE TableName ADD ColumnName

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Database Redesign
Because of the importance of making data model changes correctly, many professionals are ________ about using an automated process for database redesign.

None of these
skeptical
optimistic
ambivalent

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Database Redesign
The EXISTS keyword will be true if any row in the subquery meets the condition.

False
True

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Database Redesign
What SQL command can be used to delete columns from a table?

MODIFY TABLE TableName DROP COLUMN ColumnName
ALTER TABLE TableName DROP COLUMN ColumnName
MODIFY TABLE TableName DROP ColumnName
ALTER TABLE TableName DROP ColumnName

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Database Redesign
The data model that is produced from reverse engineering is:

an internal model.
a logical model.
a conceptual model.
None of these

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