>Anyway, the staff I deal with have now got to specify the SAP system they need. They have asked me to give them a listing of table structures, what each contains and relations between tables.
>
>If I don't do this they will have to make it up (I like the staff, but they are not IT people!). I've pointed out that table sttuctures are an integral part of system design and therefore my copyright, although the data they contain belongs to them. Am I right?

I don't know and I think this is one of those times where your best bet is to talk to a lawyer. Find one with expertise in intellectual property law.

Tamar