Hello Kewal,
you can also store the parameter datawindow (search form, in which the user inserts the retrieval arguments) in the database.
In the table with your datawindow report, you have to store a reference information, which parameter datawindow is required for the report datawindow.
You need to call the dw.Retrieve(arg, arg, ...) dynamically. You also have to store this information: e.g. in a further table.
So, you would have the following tables:
1. tbl_dwreports (with a 1:1 reference to tbl_dwfilters, to know which "filter dw" is requried.
2. tbl_dwfilters
3.1 tbl_retrievalargs (one row for each parameter (e.g. with name, datatype, mandatory yes/no, ...)
3.2 tbl_retrievalargs2dwreports: m:n reference, to store which parameters are required for a report
This solution is not so difficult and expensive.
Best regards
Heiko