Sql Interview Question and Answers

61. What are the type of Synonyms?
 
    There are two types of Synonyms are :
  • Private
  • Public
 
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62. What is an Integrity Constrains?
  An integrity constraint is a declarative way to define a business rule for a column of a table.
 
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63. What is Table?
  A table is the basic unit of data storage in an ORACLE database. The tables of a database hold all of the user accessible data. Table data is stored in rows and columns.
 
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64. What is a synonym?
  A synonym is an alias for a table, view, sequence or program unit.
 
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65. What is Rollback Segment?
  A Database contains one or more Rollback Segments to temporarily store "undo" information.
 
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