1. In the Network data model, relationship between records is implemented using _______.   keys   pointers   parent-child relationship   None of these   Hint Half-n-half Clue   2. 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   3. Which data model organizes the data in the form of tables and relations?   Hierarchical Model   Network Model   Relational Model   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. As compared to the Relational & Network Model, searching for data is very easy in Hierarchical Model.   True   False   6. SYSTEM2000 is an example of _______ database.   relational   object - oriented   network   hierarchical   Half-n-half Clue   7. In the Relational Model, the number of rows in a table is termed as _______.   cardinality   degree   domain   None of these   Half-n-half Clue