Introduction to Database System
Data encryption techniques are particularly useful for

All of these
improving data integrity
None of these
protecting data in data communication systems
reducing storage space requirements

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Introduction to Database System
In SQL, the CREATE TABLE is used

to redefine a column
to create a table, defining its columns, integrity constrains, and storage allocation
to add a column/integrity constraint to a table
to change a table's storage characteristics
All of these

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