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Oracle MCQ Quiz (Multiple Choice Questions And Answers)

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11.  In an E-R diagram an entity set is represent by a

  • Rectangle
  • Ellipse
  •  Diamond box
  • Circle
View Answer

12. Which is the subset of SQL commands used to manipulate Oracle Database structures, including tables?

  • Data Definition Language(DDL)
  • Data Manipulation Language(DML)
  • DML and DDL
  • All of the Mentioned
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13.  ________clause is an additional filter that is applied to the result.

  • Select
  • Group-by
  • Order by
  • Having
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14. Which command is used for removing a table and all its data from the database:

  • Create command
  •  Drop table command
  • Alter table command
  • All of the Mentioned
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15. ___________ defines rules regarding the values allowed in columns and is the standard mechanism for enforcing database integrity.

  • Column
  • Constraint
  • Index
  • Trigger
View Answer

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