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Database Redesign

Database Redesign
How can you find rows that do not match some specified condition?

EXISTS
None of these
NOT EXISTS
Double use of NOT EXISTS

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Database Redesign
Dependency graphs are diagrams that consist of nodes and arcs that show the dependencies of a database.

False
True

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Database Redesign
Correlated subqueries are similar to a regular subquery.

True
False

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Database Redesign
Typically, there should be at least two different copies of the database schema used in the redesign process.

False
True

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

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

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Database Redesign
Although creating test databases is a critical and necessary job, there are few career opportunities in this area.

False
True

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