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DATA MODELS INTO DATABASE DESIGNS

Data Models into Database Designs
The identifier of an entity will become the ________ of the new table.

main attribute
identity key
foreign key
primary key

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Data Models into Database Designs
Which of the following data constraints would be used to specify that the value of a cell in one column must be less than the value of a cell in another column in the same row of the same table?

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

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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):

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

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

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

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

Four
Six
Two
Three

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