Can we use the built-in Row fetch for Multiple reports in a page?

I need to create a page with multiple report regions. Each of it is based on a table. Those tables are different. I somewhat remembered that we can NOT use the built in automatic row fetch process if there are multiple report regions, neither the built in DML process. You have to make your own fetch and insert/update/delete process if you intend to.
Also if I write my own row fetch and update processes, do I have to consider lock mechnism? or just simply write select and insert/update?
Any input is appreciated.

I think I found the answer. Would Scott or other gurus take a look at the thread and confirm it, in case the limitation is not in 2.0?
Re: automatic row fetch
What I am concered about is that the locking mechanism. If I have to write my own process to fetch and insert/update, other than the regular select and insert/update statements, do I have to put commit by myself, or htmldb can handle it automatically? Is there an example for this?
Thanks in advance.

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Can we use the built-in Row fetch for Multiple reports in a page?

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