Introduction to Database System
A data dictionary is a special file that contains

the data types of all fields in all files
the widths of all fields in all files
None of these
the names of all fields in all files
All of these

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

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

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