Which one is correct statement?
Logical data independence provides following without changing application programs:
(i) Changes in access methods.
(ii) Adding new entities in database
(iii) Splitting an existing record into two or more records
(iv) C

A. (i) and (ii)

B. (iv) only

C. (i) and (iv)

D. (ii) and (iii)

You can do it
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  2. The cost of reading and writing temporary files while evaluating a query can be reduced by
  3. DFD stands for
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  5. A transaction is in state after the final statement has been executed.
  6. Change Staff table by removing default of Assistant for position column
  7. An advantage of views is
  8. _____ is a utility to capture a continuous record of server activity and provide auditing capability.
  9. Which of the following statement on the view concept in SQL is invalid?
  10. A _____ is a logical unit of database processing that includes one or more data access operations that…
  11. In multiple granularity of locks SIX lock is compatible with
  12. ______defines the structure of a relation which consists of a fixed set of attribute-domain pairs.
  13. The normal form that is not necessarily dependency preserving is
  14. In an ER model,_____ is described in the database by storing its data.
  15. As per equivalence rules for query transformation, selection operation distributes over
  16. Union operator is a :
  17. The concept of mapping of ______ entity types is the concept in which the for each strong entity type…
  18. In SQL the statement select * from R, S is equivalent to
  19. What is a disjoint less constraint?
  20. The _____ category includes storage media that can be operated on directly by the computers central…
  21. Given the following relation S(SNO,SNAME,CITY) write a query to update the value of CITY to KANPUR for…
  22. The default level of consistency in SQL is
  23. Processed data is called _____
  24. A _____ is used to define overall design of the database
  25. ______is a preferred method for enforcing data integrity
  26. ____ table store information about database or about the system.
  27. E-R Modeling is achieved by using ____ diagrams
  28. Consider the join of relation R with a relation S. If R has m tuples and S has n tuples, then the maximum…
  29. What will be the number of columns and rows respectively obtained for the operation, A- B, if A B are…
  30. The transactions like adding an employee, enrolling a student in a course are examples of _______