1. SYSTEM2000 is an example of _______ database.   relational   network   hierarchical   object - oriented   Hint Half-n-half Clue   2. The candidate keys that are not selected as the Primary key are known as _______.   alternate keys   super key   foreign key   secondary key   Half-n-half Clue   3. Which of the following are true with respect to Network model? a) Implementing relationship between records is very complex b) It is very useful in representing many-to-many relationships c) Searching for a particular record is very easy   a,b   b,c   a,c   a,b,c   Half-n-half Clue   4. In the Relational Model, the number of columns 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   divisible   indivisible   distinct   Half-n-half Clue   6. 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.   primary   foreign   reference   Half-n-half Clue   7. 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