1. 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   Hint Half-n-half Clue   2. Which structure is the hierarchical model based on?   Tree   Graph   Linked List   None of these   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. What is the set of attributes that collectively identify an entity in an entity set known as?   Super Key   Foreign Key   Unique Key   None of these   Half-n-half Clue   5. DBTG Codasyl is an example of _______ database.   object - oriented   network   hierarchical   relational   Half-n-half Clue   6. In the Network data model, relationship between records is implemented using _______.   keys   pointers   parent-child relationship   None of these   Half-n-half Clue   7. In the hierarchical model the relationship between records is expressed as _______.   pointers or links   parent-child   unique key for each record   Half-n-half Clue