The graphical representation of a query is .

A. B-Tree

B. graph

C. Query Tree

D. directed graph

You can do it
  1. Which of the following ensures the atomicity of the transaction?
  2. By ______ an area on disk in certain ways, one can make it represent a bit value of either zero (0)…
  3. Which of the following is true for network structure?
  4. A weak entity has an ______ dependency on its owner entity, which can be used for both ON UPDATE and…
  5. Relationships among relationships can be represented in an-E-R model using
  6. Between DRAM and magnetic disk storage another form of memory, called ______ memory is becoming common…
  7. ____specifies a search condition for a group or an aggregate.
  8. The statement that is executed automatically by the system as a side effect of the modification of the…
  9. Which of the following constitutes a basic set of operations for manipulating relational data?
  10. In multiple granularity of locks SIX lock is compatible with
  11. Which is the best file organization when data is frequently added or deleted from a file?
  12. A transaction is in state after the final statement has been executed.
  13. An advantage of views is
  14. What is data integrity?
  15. Which of the following statement on the view concept in SQL is invalid?
  16. The normal form that is not necessarily dependency preserving is
  17. The full form of GUI is _________
  18. Which of the following is not comparison operator?
  19. A relational database developer refers to a record as
  20. As per equivalence rules for query transformation, selection operation distributes over
  21. The fact that all employees of a particular organization should not have salaries more than $10000 is…
  22. The division operator divides a dividend A of degree m+n by a divisor relation B of degree n and produces…
  23. The clause alter table in SQL can be used to
  24. If both the functional dependencies : XY and YX hold for two attributes X and Y then the relationship…
  25. The transactions like adding an employee, enrolling a student in a course are examples of _______
  26. A _____ is a logical unit of database processing that includes one or more data access operations that…
  27. A DBMS is a ____ user if at most one user can use the system and is mostly restricted to personal computer…
  28. A relation is in attribute of other composite key. if an attribute of a composite key is dependent on…
  29. Data independence means
  30. The set of all values that can be taken by the attribute is called as _______ of the attribute.