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The relation with the attribute which is the primary key is referenced in another relation. The relation which has the attribute as a primary key is called ______________
An attribute A of datatype varchar(20) has the value “Avi”. The attribute B of datatype char(20) has value ”Reed”. Here attribute A has ____ spaces and attribute B has ____ spaces.
An attribute in a relation is a foreign key if the _______ key from one relation is used as an attribute in that relation.
A ________ on an attribute of a relation is a data structure that allows the database system to find those tuples in the relation that have a specified value for that attribute efficiently, without scanning through all the tuples of the relation.
If no multivalued attributes exist and no partial dependencies exist in a relation, then the relation is in what normal form?
If no multivalued attributes exist in a relation, then the relation is in what normal form?
A relation is in 5NF when multivalued dependencies are isolated in their own relation.
Every time the attribute A appears, it is matched with the same value of attribute B but not the same value of attribute C. Which of the following is true ?
Which of the following can be a multivalued attribute?
Every time attribute A appears, it is matched with the same value of attribute B, but not the same value of attribute C. Therefore, it is true that: