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Data Models into Database Designs

Data Models into Database Designs
The DBMS allows surrogate keys to be changed.

False
True

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Data Models into Database Designs
If a relationship has a cascade updates constraint, then if ________ in the parent table is changed, then the same change will automatically be made to any corresponding foreign key value.

a foreign key
any alternate key
the primary key
a surrogate key

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Data Models into Database Designs
An intersection table is required to represent M:N relationships.

False
True

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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?

MUST COVER
Both of the above
None of these
MUST NOT

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

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

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Data Models into Database Designs
When transforming an entity-relationship model into a relational database design, each entity is represented as a table.

False
True

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