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The database's consistent view mechanism will ensure that all data retrieved by the cursor is consistent as of the moment the cursor is opened.The database will maintain this consistent view until the cursor is closed.In the example function my_func, a cursor named c1 is defined in the function's declaration section.

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As with the SELECT INTOquery, there are two options for defining these variables: separate variables for each returned column, or use a record based on the cursor row %type.For this reason, it is important to close the cursor as soon as processing permits.Once the cursor is closed, it again becomes a definition.When a PL/SQL cursor is opened, the rows of data are not retrieved by the database.The actual rows must be retrieved, one at a time using the FETCH clause.

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