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Data Models into Database Designs

Data Models into Database Designs
Which of the following columns is(are) are required in a table?

An alternate key
A primary key
A surrogate key
A foreign key

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Data Models into Database Designs
Which of the following column properties would be used to specify that cells in a column must be immediately filled with a monetary value of $10,000?

Null status
Data constraints
Default value
Data type

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Data Models into Database Designs
The terms alternate key and candidate key mean the same thing.

False
True

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Data Models into Database Designs
Which of the following data constraints would be used to specify that the value of cells in a column must be one of a specific set of possible values?

A domain constraint
An intrarelation constraint
A range constraint
An interrelation constraint

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Data Models into Database Designs
An ideal primary key is short, numeric and seldom changing.

False
True

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Data Models into Database Designs
Which of the following column properties specifies whether or not cells in a column must contain a data value?

Data constraints
Default value
Null status
Data type

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