Which statement is true regarding constraints?
A. A table can only have one unique key constraint.
B. A table can have multiple primary key constraints.
C. Informational constraints tell DB2 what rules the data conforms to,but the rules are not enforced.
D. Foreign key constraints are enforced on the values within the rows of a table, or between the rows of two tables, by a unique index on a foreign key.
Which statement is true regarding constraints?
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Which statement is true regarding constraints?
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