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The default level of consistency in SQL is

A. repeatable read

B. read committed

C. read uncommitted

D. serializable

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

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  1. An advantage of views is
  2. Grant and revoke are _____ statements.
  3. The ______ language consists of SQL statements for operating on the data (insert, Modify, Delete) in…
  4. If an entity can belong to only one lower level entity then the constraint is
  5. Which one is correct statement?Logical data independence provides following without changing application…
  6. DBMS helps achieve
  7. The clause alter table in SQL can be used to
  8. Wait-for graph is used for
  9. The language that requires a user to specify the data to be retrieved without specifying exactly how…
  10. ______is a preferred method for enforcing data integrity
  11. A transaction is in state after the final statement has been executed.
  12. The concept of mapping of ______ entity types is the concept in which the for each strong entity type…
  13. Which of the following relational algebraic operations is not from set theory?
  14. Dependency preservation is not guaranteed in
  15. The statement that is executed automatically by the system as a side effect of the modification of the…
  16. For correct behaviour during recovery, undo and redo operation must be
  17. A logical schema
  18. The _____ category includes storage media that can be operated on directly by the computers central…
  19. Which of the following is not a logical database structure?
  20. In 2NF
  21. Immediate database modification technique uses
  22. The one guideline to be followed while designing the database is
  23. Which of the following aggregate functions does not ignore nulls in its results?.
  24. An advantage of the database management approach is
  25. Which of the following is a reason to model data?
  26. What is a disjoint less constraint?
  27. It is an abstraction through which relationships are treated as higher level entities
  28. The relational model is based on the concept that data is organized and stored in two-dimensional tables…
  29. ………………… approach reduces time and effort required for design…
  30. Which of the following is not a recovery technique?