LibreOffice Base and PostgreSQL Transactions

Hi all,

I have a 4-table DB in PostgreSQL to which I connect using LibreOffice
Base. I have a form with 2 subforms in place that allows me to:
Select an existing entity (from the ENTITY table)
Add a new financial transaction (to the TRANSREC table)
Add new line items for each transaction (to the TRANSDETAILS table).

I would like to take advantage of PostGRESQL's underlying transaction
(start, rollback, commit, etc.) capability to ensure that a given
transaction and its
line items are entered as one single transaction - or allow me to rollback
when encountering a glitch. I just don't know how to implement that using
Base as a front-end (or if it's possible).

Maybe I really need something like macros and BASIC or Python to make such
a thing work? If anyone knows a good tutorial on this subject, I can
certainly read - just haven't really found anything yet.

Many thanks in advance,
Don
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