_____ First proposed the process of normalization.

A. Edgar. W

B. Edward Stephen

C. Edgar F. Codd

D. Edward Codd

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  1. ______defines the structure of a relation which consists of a fixed set of attribute-domain pairs.
  2. Relational Algebra does not have
  3. An outstanding functionality of SQL is its support for automatic_____ to the target data.
  4. Wait-for graph is used for
  5. ______contains information that defines valid values that are stored in a column or data type.
  6. Which of the following relational algebra operations do not require the participating tables to be union-compatible?
  7. As per equivalence rules for query transformation, selection operation distributes over
  8. The normal form that is not necessarily dependency preserving is
  9. According to the levels of abstraction, the schema at the intermediate level is called
  10. Tree structures are used to store data in
  11. Which is the best file organization when data is frequently added or deleted from a file?
  12. Which of the following concurrency control schemes is not based on the serializability property?
  13. In a multi-user database, if two users wish to update the same record at the same time, they are prevented…
  14. The data models defined by ANSI/SPARC architecture are
  15. Between DRAM and magnetic disk storage another form of memory, called ______ memory is becoming common…
  16. A weak entity has an ______ dependency on its owner entity, which can be used for both ON UPDATE and…
  17. Which of the syntax is correct for insert statement? i) insert into values ii) insert into (column list)…
  18. The drawback of shadow paging technique are
  19. Which of the following ensures the atomicity of the transaction?
  20. What will be the number of columns and rows respectively obtained for the operation, A- B, if A B are…
  21. The ____ operator joins two or more conditions and displays rows only if that rows data satisfies all…
  22. The graphical representation of a query is .
  23. _____ command can be used to modify a column in a table
  24. A ____ key specifies a uniqueness constraint that no two distinct tuples in any state r of relation…
  25. A table can have only one
  26. What is a disjoint less constraint?
  27. A relational database developer refers to a record as
  28. ______ keyword is used to find the number of values in a column.
  29. Cascading rollback is avoided in all protocol except
  30. A _____ is a logical unit of database processing that includes one or more data access operations that…