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Consider the Following DBDL Description of an Entity: Teachers (Teach_num

Question 13

Multiple Choice

Consider the following DBDL description of an entity: Teachers (teach_num: variable length character string length 10 NOT NULL teach_name: variable length character string length 10 NOT NULL) Primary Key: teach_num which integrity constraint is satisfied?


A) Entity integrity
B) Necessary data
C) Referential integrity
D) Referential foreign integrity

Correct Answer:

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