The normal form that is not necessarily dependency preserving is

A. 2NF

B. 3NF


D. 4NF

Please do not use chat terms. Example: avoid using "grt" instead of "great".

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  1. If a transaction T has obtained an exclusive lock on item Q, then T can
  2. A ______ module is typically designed so that it will run on a user workstation or personal computer.
  3. The rule that a value of a foreign key must appear as a value of some specific table is called a
  4. Which of the following is not a consequence of concurrent operations?
  5. A transaction is in state after the final statement has been executed.
  6. Manager salary details are hidden from the employee .This is
  7. Relations produced from an E-R model will always be
  8. Shadow paging has
  9. Which one is true statement :
  10. Union operator is a :
  11. Which of the following is not comparison operator?
  12. Which of the following is true for network structure?
  13. In SQL, testing whether a subquery is empty is done using
  14. The part of a database management system which ensures that the data remains in a consistent state is
  15. In SQL the statement select * from R, S is equivalent to
  16. Tree structures are used to store data in
  17. _______ product was acquired by Informix, integrated into its RDBMS and introduced as the Informix Universal…
  18. Cascading rollback is avoided in all protocol except
  19. An advantage of views is
  20. Which of the following constitutes a basic set of operations for manipulating relational data?
  21. A _____ is a logical unit of database processing that includes one or more data access operations that…
  22. What are the desirable properties of a decomposition
  23. The transactions like adding an employee, enrolling a student in a course are examples of _______
  24. The middleware databases in which the business rules act are applicable to _______ tier architectures
  25. ______is a special type of integrity constraint that relates two relations & maintains consistency across…
  26. Change Staff table by removing default of Assistant for position column
  27. Which is the best file organization when data is frequently added or deleted from a file?
  28. In b-tree the number of keys in each node is than the number of its children.
  29. Whenever two independent one-to-many relationships are mixed in the same relation, a __________ arises.
  30. Which of the following is not a recovery technique?