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Data Models into Database Designs

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

True
False

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Data Models into Database Designs
In 1:N relationships, which entity becomes the parent entity is arbitrary.

True
False

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

primary key.
surrogate key.
composite key.
foreign key.

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Data Models into Database Designs
Which constraint requires that the binary relationship indicate all combinations that must appear in the ternary relationship?

Both of the above
None of these
MUST NOT
MUST COVER

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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
Three
Four

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Data Models into Database Designs
For every relationship, there are six possible sets of minimum cardinalities.

False
True

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