1. If a column or a set of columns of Table A correspond to a primary key of another Table B, then these set of columns in Table A are known as a _______ key.   foreign   primary   reference   Hint Half-n-half Clue   2. SYSTEM2000 is an example of _______ database.   hierarchical   network   object - oriented   relational   Half-n-half Clue   3. In the hierarchical model the relationship between records is expressed as _______.   unique key for each record   pointers or links   parent-child   Half-n-half Clue   4. In the Relational Model, the number of rows in a table is termed as _______.   cardinality   degree   domain   None of these   Half-n-half Clue   5. The domain in the relational model is said to be atomic if the elements of the domain consist of _______ units.   redundant   indivisible   divisible   distinct   Half-n-half Clue   6. For a database to be considered as full-fledged RDBMS, it has to comply with at least _______ out of the 12 Codd's rules.   1   6   9   10   Half-n-half Clue   7. What is the minimum subset of the super key that can be used to uniquely identify an entity in an entity set known as?   Candidate Key   Foreign Key   Unique Key   None of these   Half-n-half Clue