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Advanced Oracle PL/SQL Programming with Packages

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5. PL/Vision Package Specifications

This chapter pulls together all the specifications of the packages of PL/Vision. Organized in alphabetical order by package name, these specifications give you the basic information you need to know to call the PL/Vision programs properly in your own applications.

5.1 Common Package Elements

In providing online help, all of the PL/Vision packages take advantage of the PLVhlp utility. This is accomplished by including a help procedure in each package; the header of this procedure is as follows:

PROCEDURE help (topic_in IN VARCHAR2 := NULL)

You can therefore obtain "top-level" help for any documented package in PL/Vision via the following command (where PLVpkg is the name of the package):

SQL> exec 
PLVpkg
.help


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