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A. no redo

B. no undo

C. redo but no undo

D. neither redo nor undo

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  1. DFD stands for
  2. For using a specific database …………… command is used.
  3. If an entity can belong to only one lower level entity then the constraint is
  4. Precedence graphs help to find a
  5. Change Staff table by removing default of Assistant for position column
  6. The statement that is executed automatically by the system as a side effect of the modification of the…
  7. _____is a full form of SQL.
  8. Relations produced from an E-R model will always be
  9. Immediate database modification technique uses
  10. Maximum height of a B+ tree of order m with n key values is
  11. The full form of GUI is _________
  12. Which of the following aggregate functions does not ignore nulls in its results?.
  13. ………………… approach reduces time and effort required for design…
  14. The normal form that is not necessarily dependency preserving is
  15. The metadata is created by the
  16. A logical schema
  17. Isolation of the transactions is ensured by
  18. If the closure of an attribute set is the entire relation then the attribute set is a
  19. In a multi-user database, if two users wish to update the same record at the same time, they are prevented…
  20. SQL server stores index information in the _____system table
  21. DBMS helps achieve
  22. Data independence means
  23. _______ product was acquired by Informix, integrated into its RDBMS and introduced as the Informix Universal…
  24. E-R Modeling is achieved by using ____ diagrams
  25. An outstanding functionality of SQL is its support for automatic_____ to the target data.
  26. A _____ is a logical unit of database processing that includes one or more data access operations that…
  27. Checkpoints are a part of
  28. Processed data is called _____
  29. Which of the following is not a characteristic of a relational database model?
  30. Given the following relation S(SNO,SNAME,CITY) write a query to update the value of CITY to KANPUR for…