____ table store information about database or about the system.


B. System

C. Nested

D. None of these

Related Questions

  1. In SQL the word natural can be used with
  2. The ______ language consists of SQL statements for operating on the data (insert, Modify, Delete) in…
  3. Which of the following concurrency control schemes is not based on the serializability property?
  4. By ______ an area on disk in certain ways, one can make it represent a bit value of either zero (0)…
  5. A relational database developer refers to a record as
  6. ______is a preferred method for enforcing data integrity
  7. The clause in SQL that specifies that the query result should be sorted in ascending or descending order…
  8. Data independence means
  9. Between DRAM and magnetic disk storage another form of memory, called ______ memory is becoming common…
  10. Which of the following is not a consequence of concurrent operations?
  11. Employees in a company are each assigned their own office, i.e. for each employee there exists a unique…
  12. In an ER diagram the ___shape specifies the Attibute and a ____ shape specifies the primary key attribute.
  13. An advantage of the database management approach is
  14. operator is used to compare a value to a list of literals values that have been specified.
  15. Wait-for graph is used for
  16. A logical schema
  17. _____ command can be used to modify a column in a table
  18. ____ table store information about database or about the system.
  19. Which is the best file organization when data is frequently added or deleted from a file?
  20. The ____ operator joins two or more conditions and displays rows only if that rows data satisfies all…
  21. A DBMS is a ____ user if at most one user can use the system and is mostly restricted to personal computer…
  22. For using a specific database …………… command is used.
  23. If two relations R and S are joined, then the non matching tuples of both R and S are ignored in
  24. The _______ is a set of programs to use and / or modify this data.
  25. Which of the following constitutes a basic set of operations for manipulating relational data?
  26. ______is a special type of integrity constraint that relates two relations & maintains consistency across…
  27. What is data integrity?
  28. E-R Modeling is achieved by using ____ diagrams
  29. Which of the following is not a characteristic of a relational database model?
  30. Whenever two independent one-to-many relationships are mixed in the same relation, a __________ arises.

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