According to the levels of abstraction, the schema at the intermediate level is called

A. Logical schema.

B. Physical schema.

C. Subschema.

D. None of the above.

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  1. The normal form that is not necessarily dependency preserving is
  2. A table can have only one
  3. Which of the following relational algebra operations do not require the participating tables to be union-compatible?
  4. The metadata is created by the
  5. The transactions like adding an employee, enrolling a student in a course are examples of _______
  6. The middleware databases in which the business rules act are applicable to _______ tier architectures
  7. An outstanding functionality of SQL is its support for automatic_____ to the target data.
  8. SQL server stores index information in the _____system table
  9. By ______ an area on disk in certain ways, one can make it represent a bit value of either zero (0)…
  10. Which of the following is not comparison operator?
  11. The data models defined by ANSI/SPARC architecture are
  12. Which of the following is not a consequence of non-normalized database?
  13. The ______ key of a relation is the attribute (column) or collection of attributes, which uniquely identify…
  14. Which of the following is not a logical database structure?
  15. Protection of data from unauthorized Disclosure results in loss of _______
  16. If an entity can belong to only one lower level entity then the constraint is
  17. _____ is a utility to capture a continuous record of server activity and provide auditing capability.
  18. The division operator divides a dividend A of degree m+n by a divisor relation B of degree n and produces…
  19. ____ table store information about database or about the system.
  20. Shadow paging has
  21. The ____ operator joins two or more conditions and displays rows only if that rows data satisfies all…
  22. Dependency preservation is not guaranteed in
  23. Which of the following is not a recovery technique?
  24. Wait-for graph is used for
  25. Processed data is called _____
  26. The part of a database management system which ensures that the data remains in a consistent state is
  27. Precedence graphs help to find a
  28. operator is used to compare a value to a list of literals values that have been specified.
  29. The one guideline to be followed while designing the database is
  30. Relational Algebra is