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By ______ an area on disk in certain ways, one can make it represent a bit value of either zero (0) or one (1).

A. Vulcanizing

B. Galvanizing

C. Magnetizing

D. Passing UV rays

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  1. If two relations R and S are joined, then the non matching tuples of both R and S are ignored in
  2. In an ER diagram the ___shape specifies the Attibute and a ____ shape specifies the primary key attribute.
  3. Which one is correct statement?Logical data independence provides following without changing application…
  4. Which of the following relational algebra operations do not require the participating tables to be union-compatible?
  5. Which is the best file organization when data is frequently added or deleted from a file?
  6. ………………… approach reduces time and effort required for design…
  7. Relations produced from an E-R model will always be
  8. Between DRAM and magnetic disk storage another form of memory, called ______ memory is becoming common…
  9. By ______ an area on disk in certain ways, one can make it represent a bit value of either zero (0)…
  10. Consider the join of relation R with a relation S. If R has m tuples and S has n tuples, then the maximum…
  11. The graphical representation of a query is .
  12. Which of the following addressing modes permits relocation without any change over in the code?
  13. Drop Table cannot be used to drop a table referenced by a ______ constraint.
  14. What is a disjoint less constraint?
  15. The normal form that is not necessarily dependency preserving is
  16. Which of the following is not a logical database structure?
  17. In SQL the statement select * from R, S is equivalent to
  18. The normalization was first proposed by .
  19. An advantage of views is
  20. Which of the syntax is correct for insert statement? i) insert into values ii) insert into (column list)…
  21. The fact that information in the data warehouse changes far less often and may be regarded as non-real-time…
  22. An advantage of the database management approach is
  23. For correct behaviour during recovery, undo and redo operation must be
  24. In E-R Diagram total participation is represented by
  25. The default level of consistency in SQL is
  26. Tree structures are used to store data in
  27. ______is a special type of integrity constraint that relates two relations & maintains consistency across…
  28. In 2NF
  29. Which of the following is true for network structure?
  30. Relational Algebra is