Curioustab

Home » Database » Data Models into Database Designs

Which constraint requires that the binary relationship indicate all combinations that must appear in the ternary relationship?

MUST COVER
MUST NOT
Both of the above.
None of the above is correct.

Correct Answer: MUST COVER

Next Question→

More Questions from Data Models into Database Designs

A unique, DBMS-supplied identifier used as the primary key of a relation is called a(n):
For every relationship, how many possible sets of minimum cardinalities are there?
Which of the following data constraints would be used to specify that the value of cells in a column must be one of a specific set of possible values?
A foreign key is:
For every relationship, how many possible types of actions are there when enforcing minimum cardinalities?
Which of the following column properties specifies whether or not cells in a column must contain a data value?
Which of the following column properties would be used to specify that cells in a column must contain a monetary value that is less than another monetary value in the same row?
Which of the following columns is(are) are required in a table?
Which is not true about surrogate keys?
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.

Discussion & Comments

No comments yet. Be the first to comment!

Join Discussion