Question 677 Consider the relation Emp_Dept with SSn as key Following operations are performed: a.Insert a record of department with no employee b.Delete the last employee […]

Question 678 Data warehouse bus matrix is a combination of A Dimensions and data marts B Dimensions and facts C Facts and data marts D Dimensions […]

Question 679 ____ is logical design of a database, while____is snapshot of data in the database at a point in time. A Database schema, database instance […]