A relation is said to be in 3 NF if (i) it is in 2 NF (ii) non-key attributes are independent of one another (iii) key attribute is not dependent on part of a composite key (iv) has no multi-valued dependency

Related MCQs

• A relation is in                          if an attribute of a composite key is dependent on an attribute of other composite key.
• If an attribute of a composite key is dependent on an attribute of the other composite key, normalization called ................ is needed.
• Given the relation Supplier(s_id, p_order, s_name, qty) Given that there is a unique s_name for each s_id and that s_id, p_order is a composite key, find the correct statement among the following: i. this relation is a BCNF ii. this is 3 NF relation iii. this is a 2 NF relation iv. this is a 1 NF relation
• 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                              
• 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 ______________
• The relation with the attribute which is the primary key is referenced in another relation. The relation which has the attribute as primary key is called
• If a multivalued dependency holds and is not implied by the corresponding functional dependency, it usually arises from one of the following sources.
• If a multivalued dependency holds and is not implied by the corresponding functional dependency, it usually arises from one of the following sources.
• An attribute in a relation is a foreign key if the                key from one relation is used as an attribute in that relation.
• An attribute in a relation is a foreign key if the _______ key from one relation is used as an attribute in that relation.