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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?

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

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Data Models into Database Designs
In a 1:1 relationship, the primary key placement is arbitrary.

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
Data type
Null status

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Data Models into Database Designs
A foreign key is:

used to define data types.
used to define null status.
a column containing the primary key of another table.
All of these

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Data Models into Database Designs
Which is not true about surrogate keys?

They are fixed.
They are short.
They are numeric.
They have meaning to the user.

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Data Models into Database Designs
A foreign key is used to implement relationships between tables.

False
True

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