>Are you using the MM .NET Web Service data access class?

No.
I need to create database application which read data from PostgreSQL server using .NET data provider for PostgreSQL.

I plan database access in report expressions like

=psql("select name from customer where id="+myid.value)

MS ReportViewer control invokes those expressions multiple times.
So it takes 5 minutes to show the report if server is in internet.

So I need to cache all data access, using field caching.
I havent found any sample to implement field caching.
So I think I should use record (object) level caching where every table record is read fully from internet.