Isolation of the transactions is ensured by

A. Transaction management

B. Application programmer

C. Concurrency control

D. Recovery management

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  1. The drawback of shadow paging technique are
  2. The data in the database at a particular moment of time is called the _______
  3. ______is a preferred method for enforcing data integrity
  4. Union operator is a :
  5. ______is a special type of integrity constraint that relates two relations & maintains consistency across…
  6. Use of UNIQUE while defining an attribute of a table in SQL means that the attribute values are
  7. The division operator divides a dividend A of degree m+n by a divisor relation B of degree n and produces…
  8. An advantage of views is
  9. What is a disjoint less constraint?
  10. ____ table store information about database or about the system.
  11. A table can have only one
  12. The fact that all employees of a particular organization should not have salaries more than $10000 is…
  13. The size of a data item is called its _______, which can be a field of some record or may be a larger…
  14. A ______ module is typically designed so that it will run on a user workstation or personal computer.
  15. The graphical representation of a query is .
  16. Data items grouped together for storage purposes are called a
  17. It is an abstraction through which relationships are treated as higher level entities
  18. In 2NF
  19. A weak entity has an ______ dependency on its owner entity, which can be used for both ON UPDATE and…
  20. ____specifies a search condition for a group or an aggregate.
  21. Which of the following aggregate functions does not ignore nulls in its results?.
  22. Which of the following is not a consequence of concurrent operations?
  23. ………………… approach reduces time and effort required for design…
  24. Which of the syntax is correct for insert statement? i) insert into values ii) insert into (column list)…
  25. Which of the following is true for network structure?
  26. Which one is correct statement?Logical data independence provides following without changing application…
  27. An outstanding functionality of SQL is its support for automatic_____ to the target data.
  28. A relational database developer refers to a record as
  29. The normalization was first proposed by .
  30. In b-tree the number of keys in each node is than the number of its children.