Question 728 ____key must satisfy referential integrity in a relation, while__key must satisfy entity integrity. A Candidate, primary B Foreign,primary C Primary,foreign D Foreign,superkey Database-Management-SystemConstraintsKVS 22-12-2018 […]

Question 729 Given the following two statements about SQL (a) An SQL query can contain HAVING clause only if it has GROUP BY clause. (b) In […]

Question 730 The process of removing deficiencies and loopholes in the data is called as____ A Data aggregation B Extraction of data C Compression of data […]

Question 731 Consider the relation Emp-Dept with SSn as key Which of the following is (are) invalid operation(s)? a) Inserting an employee without name and address […]