Manager salary details are hidden from the employee .This is

A. Conceptual level data hiding.

B. External level data hiding.

C. Physical level data hiding.

D. None of these.

Please do not use chat terms. Example: avoid using "grt" instead of "great".

You can do it
  1. The drawback of shadow paging technique are
  2. If a transaction T has obtained an exclusive lock on item Q, then T can
  3. E-R Modeling is achieved by using ____ diagrams
  4. A relation is in attribute of other composite key. if an attribute of a composite key is dependent on…
  5. Tree structures are used to store data in
  6. In an ER diagram the ___shape specifies the Attibute and a ____ shape specifies the primary key attribute.
  7. The _______ is a set of programs to use and / or modify this data.
  8. The fact that all employees of a particular organization should not have salaries more than $10000 is…
  9. A _____ is a logical unit of database processing that includes one or more data access operations that…
  10. Use of UNIQUE while defining an attribute of a table in SQL means that the attribute values are
  11. What will be the number of columns and rows respectively obtained for the operation, A- B, if A B are…
  12. The cost of reading and writing temporary files while evaluating a query can be reduced by
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  14. The ______ key of a relation is the attribute (column) or collection of attributes, which uniquely identify…
  15. Which one is correct statement?Logical data independence provides following without changing application…
  16. The clause alter table in SQL can be used to
  17. Relationships among relationships can be represented in an-E-R model using
  18. Maximum height of a B+ tree of order m with n key values is
  19. Which two files are used during operation of the DBMS?
  20. _____ is a utility to capture a continuous record of server activity and provide auditing capability.
  21. The keyword to eliminate duplicate rows from the query result in SQL is
  22. A relational database developer refers to a record as
  23. Which of the following constitutes a basic set of operations for manipulating relational data?
  24. When an E-R diagram is mapped to tables, the representation is redundant for
  25. A transaction is in state after the final statement has been executed.
  26. ______contains information that defines valid values that are stored in a column or data type.
  27. A ______ module is typically designed so that it will run on a user workstation or personal computer.
  28. Which of the following is not a logical database structure?
  29. ____specifies a search condition for a group or an aggregate.
  30. A weak entity has an ______ dependency on its owner entity, which can be used for both ON UPDATE and…