It is an abstraction through which relationships are treated as higher level entities

A. Generalization.

B. Specialization.

C. Aggregation.

D. Inheritance.

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

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  1. The drawback of shadow paging technique are
  2. The size of a data item is called its _______, which can be a field of some record or may be a larger…
  3. According to the levels of abstraction, the schema at the intermediate level is called
  4. The middleware databases in which the business rules act are applicable to _______ tier architectures
  5. Which is the best file organization when data is frequently added or deleted from a file?
  6. ____ table store information about database or about the system.
  7. Which of the following addressing modes permits relocation without any change over in the code?
  8. Employees in a company are each assigned their own office, i.e. for each employee there exists a unique…
  9. If two relations R and S are joined, then the non matching tuples of both R and S are ignored in
  10. ______contains information that defines valid values that are stored in a column or data type.
  11. DBMS helps achieve
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  13. Use of UNIQUE while defining an attribute of a table in SQL means that the attribute values are
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  15. Given the following relation S(SNO,SNAME,CITY) write a query to update the value of CITY to KANPUR for…
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  17. E-R Modeling is achieved by using ____ diagrams
  18. Dependency preservation is not guaranteed in
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  20. _____clause is an additional filter that is applied to the result.
  21. For correct behaviour during recovery, undo and redo operation must be
  22. Tree structures are used to store data in
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  24. In an ER diagram the ___shape specifies the Attibute and a ____ shape specifies the primary key attribute.
  25. HSAM stands for ……….
  26. The data models defined by ANSI/SPARC architecture are
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  28. Drop Table cannot be used to drop a table referenced by a ______ constraint.
  29. Cascading rollback is avoided in all protocol except
  30. Isolation of the transactions is ensured by