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Keyword & Parameter Description:
WHEN:
This keyword introduces the exception handler. You can have many exceptions execute the similar sequence of the statements by following the keyword WHEN with a list of the exceptions, unraveling them by the keyword OR. When any exception in the list is raised, the related statements are executed.
exception_name:
This identifies a predefined exception like ZERO_DIVIDE, or a user-defined exception formerly declared within the present scope.
OTHERS:
This keyword stands for all the exceptions not explicitly named in the exception-handling section of the block. The use of OTHERS is optional and is permitted only as the last exception handler. You cannot involve OTHERS in the list of exceptions subsequent the keyword WHEN.
Statement:
This is merely an executable statement.
Parameter and Keyword Description: cursor_variable_name: This identifies a cursor variable or the parameter formerly declared within the present scope. host_cursor_va
What are 3 good practices of modeling and/or implementing data warehouses?
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Write a query to find academics that are authors and that have only ever coauthored papers with authors from institutes in the same state as their own. List their academic number,
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Parameter and Keyword Description: cursor_name: This identifies an explicit cursor formerly declared within the present scope. cursor_variable_name: These identif
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%ROWTYPE: This attribute gives a record type which represents a row in the database table or a row fetched from a formerly declared cursor. The Fields in the record and corresp
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