When you use the built-in nodes Compute, Database, and Filter,
you must customize them to determine the exact processing that they provide.
To do this, you must create, for each node, an ESQL module in which you code
the ESQL statements and functions to tailor the behavior of the node, referring
to message content, or database content, or both, to achieve the results that
you require. ESQL modules are maintained in ESQL files, managed through the Broker Application Development
perspective.
This section provides information
on:
You can use the ESQL debugger, which is part of the flow debugger,
to debug the code that you write. The debugger steps through ESQL code statement
by statement, so that you can view and check the results of every line of
code that is executed.
Note: 
In previous releases there were several
types of debugger, each of which handled a specific type of code, such as
ESQL, message flows, or Java. In Version 6, these separate debuggers are integrated
into a single debugger, which is known simply as
"the debugger", and
which handles all types of code.
