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Data Models into Database Designs

Data Models into Database Designs
A unique, DBMS-supplied identifier used as the primary key of a relation is called a(n):

primary key.
composite key.
surrogate key.
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
Data type
Default value

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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
For every relationship, how many possible sets of minimum cardinalities are there?

Two
Three
Four
Six

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Data Models into Database Designs
A primary key should be defined as:

NULL.
NOT NULL.
None of these
Either of the above can be used.

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Data Models into Database Designs
For every relationship, how many possible types of actions are there when enforcing minimum cardinalities?

Six
Two
Four
Three

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