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DDE Functions Overview

As part of the DDE package, the DDE functions available from within PL/SQL procedures and triggers can be grouped into the following categories:

Support Functions

These functions are used to start and stop other DDE Server applications.

DDE.APP_BEGIN

Begins a DDE server application.

DDE.APP_END

Ends a DDE server application.

DDE.APP_FOCUS

Focuses a DDE server application.

Connect/Disconnect Functions

These functions are used to connect to and disconnect from DDE server applications.

DDE.INITIATE

Starts a DDE conversation with a DDE server application.

DDE.TERMINATE

Ends a DDE conversation with a DDE server application.

Transaction Functions

These functions are used to exchange data with DDE server applications.

DDE.EXECUTE

Executes a command recognized by a DDE server application.

DDE.POKE

Supplies information to a DDE server application.

DDE.REQUEST

Requests information from a DDE server application.

Data Type Translation Functions

These functions are used to translate DDE data type constants to strings and back; in addition, DDE.GETFORMATNUM allows users to register a new data format that is not predefined by Microsoft Windows. Note that these functions do not translate the data itself (all DDE data is represented with the CHAR data type in PL/SQL), just data type constants.

DDE.GETFORMATNUM

Convert/register a data format string to a number.

DDE.GETFORMATSTR

Convert a data format number to a string.