October 2002
Intermediate to advanced
688 pages
14h 14m
English
Content preview from Oracle® PL/SQL® Interactive Workbook, Second Edition
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Lab 12.2 Passing Parameters In and Out of Procedures
Lab ObjectivesAfter this Lab, you will be able to: |
Parameters
Parameters are the means to pass values to and from the calling environment to the server. These are the values that will be processed or returned via the execution of the procedure. There are three types of parameters: IN, OUT, and IN OUT.
Modes
Modes specify whether the parameter passed is read in or a receptacle for what comes out.
Figure 12.1 illustrates the relationship between the parameters when they are in the procedure header versus when the procedure is executed.
Figure 12.1. Matching Procedure Call to Procedure Header
Formal and Actual Parameters
Formal parameters are ...
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