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domain - correct answer In data modeling, the construct used to organize and describe an
attribute's set of possible values.
entity integrity - correct answer The property of a relational table that guarantees each entity
has a unique value in a primary key and that the key has no null values.
equijoin - correct answer A join operator that links tables based on an equality condition that
compares specified columns of the tables.
flags - correct answer Special codes implemented by designers to trigger a required response,
alert end users to specified conditions, or encode values. Flags may be used to prevent nulls by
bringing attention to the absence of a value in a table.
foreign key (FK) - correct answer An attribute or attributes in one table whose values must
match the primary key in another table or whose values must be null. See key.
full functional dependence - correct answer A condition in which an attribute is functionally
dependent on a composite key but not on any subset of the key.
functional dependence - correct answer Within a relation R, an attribute B is functionally
dependent on an attribute A if and only if a given value of attribute A determines exactly one
value of attribute B. The relationship "B is dependent on A" is equivalent to "A determines B,"
and is written as A->B.
homonyms - correct answer The use of the same name to label different attributes. Homonyms
generally should be avoided. Some relational software automatically checks for homonyms and
either alerts the user to their existence or automatically makes the appropriate adjustments.
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