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Relations produced from an E-R model will always be

A. First normal form.

B. Second normal form.

C. Third normal form.

D. Fourth normal form.

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  1. A logical schema
  2. The drawback of shadow paging technique are
  3. For correct behaviour during recovery, undo and redo operation must be
  4. Shadow paging has
  5. In an E-R, Y is the dominant entity and X is a subordinate entity. Then which of the following is incorrect…
  6. Which two files are used during operation of the DBMS?
  7. _______ product was acquired by Informix, integrated into its RDBMS and introduced as the Informix Universal…
  8. A DBMS is a ____ user if at most one user can use the system and is mostly restricted to personal computer…
  9. Data items grouped together for storage purposes are called a
  10. Which of the following is not a consequence of concurrent operations?
  11. A ______ module is typically designed so that it will run on a user workstation or personal computer.
  12. Dependency preservation is not guaranteed in
  13. _____ First proposed the process of normalization.
  14. A ____ key specifies a uniqueness constraint that no two distinct tuples in any state r of relation…
  15. The normal form that is not necessarily dependency preserving is
  16. Which of the following statement on the view concept in SQL is invalid?
  17. A weak entity has an ______ dependency on its owner entity, which can be used for both ON UPDATE and…
  18. Relationships among relationships can be represented in an-E-R model using
  19. Which of the following relational algebra operations do not require the participating tables to be union-compatible?
  20. Which one is true statement :
  21. Immediate database modification technique uses
  22. An advantage of the database management approach is
  23. If an entity can belong to only one lower level entity then the constraint is
  24. The ______ key of a relation is the attribute (column) or collection of attributes, which uniquely identify…
  25. The graphical representation of a query is .
  26. The metadata is created by the
  27. By ______ an area on disk in certain ways, one can make it represent a bit value of either zero (0)…
  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. Which of the following concurrency control schemes is not based on the serializability property?
  30. A table can have only one