Why are you looking at these complex solutions? Is there a problem with a simple pessimistic locking approach, like creating a lock file when someone goes to the edit page and removing it when they save or adding a "signed_out_by" column in the database table? There are issues with people leaving that screen open and walking away, but you can use javascript and timeouts to help with that.

In reply to Re: Locking a table row while web form is open by perrin
in thread Locking a table row while web form is open by diego_de_lima

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