Question: Can someone Please help me write following integrity constraints in SQLPlus Command statements. When a record about a tour operator is removed from the database,

Can someone Please help me write following integrity constraints in SQLPlus Command statements.

  1. When a record about a tour operator is removed from the database, the records about Airlines associated with this tour operator must also be removed from the database.

  2. When a record about a tour operators representative who supervised other representatives is removed from the database, the records about subordinate

  3. Domain of attribute Category (Room entity set) contains only three values: standard, luxury and executive.

  4. Domain of attribute Fee (Service entity set) contains numbers between 0 and 200.

  5. Domain of attribute Nbed (Room entity set) contains integer numbers 1, 2, and 3.

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