Product Edit

Hi,
I want to know that if multiple users are logged in a same Project(Application), and both are update same record,so there is any code for it while we got it this record has been already updated.
Similarly, In case of Deleting, if one user delete same record firstly and other user updating same record,then could we get information about these facts.
Plz help me...
Thanks !

[quote user="FrankKalis"]
Welcome to the forum!
If I understand you correctly, there is no built-in code for that. This would be the responsibilty of the application. Especially in the first case. The second might be less crucial as the second user would simply update a nonexisting row, so update nothing.
[/quote]
Thanks about second case.
Could you tell me any logic about first case?
Thank You very Much!