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Relationships among relationships can be represented in an-E-R model using

A. Aggregation

B. Association

C. Weak entity sets

D. Weak relationship sets

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

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  1. SQL server stores index information in the _____system table
  2. Assume transaction A holds a shared lock R. If transaction B also requests for a shared lock on R.
  3. Which of the following is not comparison operator?
  4. In SQL the statement select * from R, S is equivalent to
  5. The transactions like adding an employee, enrolling a student in a course are examples of _______
  6. Which of the following relational algebraic operations is not from set theory?
  7. The collection of information stored in a database at a particular moment is called as ......
  8. By ______ an area on disk in certain ways, one can make it represent a bit value of either zero (0)…
  9. The relational model is based on the concept that data is organized and stored in two-dimensional tables…
  10. DROP is a statement in SQL.
  11. The data in the database at a particular moment of time is called the _______
  12. What are the desirable properties of a decomposition
  13. DBMS is a collection of _____ that enables user to create and maintain a database.
  14. Data independence means
  15. Which of the following is not a logical database structure?
  16. The set of all values that can be taken by the attribute is called as _______ of the attribute.
  17. For using a specific database …………… command is used.
  18. Precedence graphs help to find a
  19. A data type or format is specified for each _________
  20. The clause in SQL that specifies that the query result should be sorted in ascending or descending order…
  21. Data items grouped together for storage purposes are called a
  22. ____ table store information about database or about the system.
  23. Which of the following constitutes a basic set of operations for manipulating relational data?
  24. The statement that is executed automatically by the system as a side effect of the modification of the…
  25. The drawback of shadow paging technique are
  26. Wait-for graph is used for
  27. Dependency preservation is not guaranteed in
  28. Which one is correct statement?Logical data independence provides following without changing application…
  29. The normal form that is not necessarily dependency preserving is
  30. An advantage of views is