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E-R Modeling is achieved by using ____ diagrams

A. DFD

B. Flowcharts

C. Gantt Charts

D. E-R

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  1. The statement that is executed automatically by the system as a side effect of the modification of the…
  2. Which of the following relational algebraic operations is not from set theory?
  3. Change Staff table by removing default of Assistant for position column
  4. The default level of consistency in SQL is
  5. Data independence means
  6. ______ keyword is used to find the number of values in a column.
  7. ______is a special type of integrity constraint that relates two relations & maintains consistency across…
  8. DBMS helps achieve
  9. E-R Modeling is achieved by using ____ diagrams
  10. A list consists of last names, first names, addresses and pin codes. If all people in the list have…
  11. Which of the following is not a recovery technique?
  12. According to the levels of abstraction, the schema at the intermediate level is called
  13. Key to represent relationship between tables is called
  14. A table can have only one
  15. Which of the following relational algebra operations do not require the participating tables to be union-compatible?
  16. Consider the join of relation R with a relation S. If R has m tuples and S has n tuples, then the maximum…
  17. A top-to-bottom relationship among the items in a database is established by a
  18. Relationships among relationships can be represented in an-E-R model using
  19. _____clause is an additional filter that is applied to the result.
  20. The metadata is created by the
  21. In a relational schema, each tuple is divided into fields called
  22. ____specifies a search condition for a group or an aggregate.
  23. Immediate database modification technique uses
  24. The normal form that is not necessarily dependency preserving is
  25. A _____ is a logical unit of database processing that includes one or more data access operations that…
  26. Dependency preservation is not guaranteed in
  27. The cost of reading and writing temporary files while evaluating a query can be reduced by
  28. In b-tree the number of keys in each node is than the number of its children.
  29. A DBMS is a ____ user if at most one user can use the system and is mostly restricted to personal computer…
  30. A ____ key specifies a uniqueness constraint that no two distinct tuples in any state r of relation…