>We add a 2-char prefix to each field which is unique to the table. If the primary key in one table is ODID then the foreign key in a child table will be PR_ODID. Even SQL code is simplified when we know that a field name is unique to a table.

Yes that is true. I personally do not like the two character prefix. I used to use it all the time. I found it to be redundant becasuse I seemed to always to access my fields by table.fieldname. In witch case I know what table I'm using. What I have switched to is more descriptive field names with a single type idenifer in the front (i - integer, c- char, etc). The PK is always tablenamePK and any forgin keys are forgintablenameFK. I found it to work for me. Naming conventions are so personal though <g>.