Question 654 In a relational database model, NULL values can be used for all but which one of the following ? A To allow duplicate tuples […]

Question 655 Which of the following statement(s) is/are FALSE in the context of Relational DBMS ? I. Views in a database system are important because they […]

Question 656 In RDBMS, the constraint that no key attribute (column) may be NULL is referred to as: A Referential integrity B Multi-valued dependency C Entity […]

Question 658 _______ is subject oriented, integrated, time variant, nonvolatile collection of data in support of management decisions. A Data mining B Web mining C Data […]