Question: When using query by example ( QBE ) in the data manipulation component of a database management system ( DBMS ) , the is used

When using query by example (QBE) in the data manipulation component of a database management system (DBMS), the is used when all the conditions in the QBE form must be met.
a. NOR operator
b. AND operator
c. OR operator
When using query by example (QBE) in the data manipulation component

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