Home

If the closure of an attribute set is the entire relation then the attribute set is a

A. superkey

B. candidate key

C. primary key

D. not a key

You can do it
  1. The full form of GUI is _________
  2. _____ command can be used to modify a column in a table
  3. The clause in SQL that specifies that the query result should be sorted in ascending or descending order…
  4. Whenever two independent one-to-many relationships are mixed in the same relation, a __________ arises.
  5. A _____ is used to define overall design of the database
  6. Between DRAM and magnetic disk storage another form of memory, called ______ memory is becoming common…
  7. _____clause is an additional filter that is applied to the result.
  8. The keyword to eliminate duplicate rows from the query result in SQL is
  9. Relational Algebra is
  10. A relation is in attribute of other composite key. if an attribute of a composite key is dependent on…
  11. ____ table store information about database or about the system.
  12. Which of the following statement on the view concept in SQL is invalid?
  13. The fact that all employees of a particular organization should not have salaries more than $10000 is…
  14. What will be the number of columns and rows respectively obtained for the operation, A- B, if A B are…
  15. The statement that is executed automatically by the system as a side effect of the modification of the…
  16. _____ is a utility to capture a continuous record of server activity and provide auditing capability.
  17. The language that requires a user to specify the data to be retrieved without specifying exactly how…
  18. Which of the following relational algebraic operations is not from set theory?
  19. The set of all values that can be taken by the attribute is called as _______ of the attribute.
  20. Which of the following is not comparison operator?
  21. _______ product was acquired by Informix, integrated into its RDBMS and introduced as the Informix Universal…
  22. The data models defined by ANSI/SPARC architecture are
  23. The transactions like adding an employee, enrolling a student in a course are examples of _______
  24. Employees in a company are each assigned their own office, i.e. for each employee there exists a unique…
  25. The fact that information in the data warehouse changes far less often and may be regarded as non-real-time…
  26. An advantage of the database management approach is
  27. A ____ key specifies a uniqueness constraint that no two distinct tuples in any state r of relation…
  28. Checkpoints are a part of
  29. Which of the following addressing modes permits relocation without any change over in the code?
  30. In E-R Diagram total participation is represented by