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Implicit Rollbacks
Before execute the INSERT, UPDATE, or DELETE statement, the Oracle marks an implicit savepoint . When the statement fails, the Oracle rolls back to the savepoint. Generally, the failed SQL statement is rolled back, not the entire transaction. Though, if the statement raises an unhandled exception, the host atmosphere determines what is rolled back.
When you exit a stored subprogram with an unhandled exception, the PL/SQL does not assign values to the OUT parameters. Also, the PL/SQL does not roll back the database work completed by the subprogram.
IN Mode An IN parameter pass the values to the subprogram being called. Within the subprogram, an IN parameter acts like a constant. And hence, it cannot be assigned a value.
LOOP Statements The LOOP statements execute a series of statements at multiple times. The loops enclose the series of statements that is to be repeated. The PL/SQL provides typ
Block Structure The PL/SQL is a block-structured language. That is, the fundamental units (procedures, anonymous blocks, and functions) that make up a PL/SQL program are logi
Literature review
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