a) Ordering of rows is immaterial b) No two rows are identical c) (A) and (B) both ...

a) a SQL query automatically eliminates duplicates b) SQL permits attribute names to be repeated in the same relation

a) Groups b) Table c) Attributes d) Switchboards Answer: c

a) Data independence b) Centralized control of data c) Neither (A) nor (B) d) both (A) and (B) Answer: ...

a) Cartesian product b) Difference c) Intersection d) Product Answer: a

a) Ordered file b) Unordered file c) Hashed file d) B-tree Answer: c

a) Primary key b) Secondary Key c) Foreign Key d) None of these Answer: c

a) Data Definition Language b) Meta Language c) Procedural query Language d) None of the above Answer: c

a) Network Model b) Hierarchical Model c) Relational Model d) None of these Answer: a

a) Dotted rectangle b) Diamond c) Doubly outlined rectangle d) None of these Answer: c