In an E-R diagram double lines indicate

A. Total participation.

B. Multiple participation.

C. Cardinality N.

D. None of the above.

You can do it
  1. What is a disjoint less constraint?
  2. Relations produced from an E-R model will always be
  3. What are the desirable properties of a decomposition
  4. The common column is eliminated in
  5. Shadow paging has
  6. A relational database developer refers to a record as
  7. Relational Algebra does not have
  8. Which of the following is true for network structure?
  9. The values of the attribute describes a particular
  10. Which two files are used during operation of the DBMS?
  11. If two relations R and S are joined, then the non matching tuples of both R and S are ignored in
  12. The relational model is based on the concept that data is organized and stored in two-dimensional tables…
  13. Which of the following is not a consequence of non-normalized database?
  14. _____ First proposed the process of normalization.
  15. According to the levels of abstraction, the schema at the intermediate level is called
  16. An advantage of the database management approach is
  17. The drawback of shadow paging technique are
  18. Relational Algebra is
  19. For using a specific database …………… command is used.
  20. In a multi-user database, if two users wish to update the same record at the same time, they are prevented…
  21. Which of the following is not a logical database structure?
  22. The data in the database at a particular moment of time is called the _______
  23. The keyword to eliminate duplicate rows from the query result in SQL is
  24. The normalization was first proposed by .
  25. ………………… approach reduces time and effort required for design…
  26. The ____ operator joins two or more conditions and displays rows only if that rows data satisfies all…
  27. Assume transaction A holds a shared lock R. If transaction B also requests for a shared lock on R.
  28. Which of the following statement on the view concept in SQL is invalid?
  29. A list consists of last names, first names, addresses and pin codes. If all people in the list have…
  30. The ______ key of a relation is the attribute (column) or collection of attributes, which uniquely identify…