السلام عليكــم ورحمـة الله وبركاتــه ،،
You are the owner of the table
Student (stdid,stdname,subject,marks)
On 6/11/2008 the table is in consistent state.
You have now given update privilege on the table to three of your friends Ahmed, Sarah and Iman.
On 17/11/2008 you have seen an inconsistency in the table with respect to marks in one of the subjects.
You now require the following information (so that you can take some corrective measures):
a) Who updated the table during the time period.
B) On which date did updations happen
Explain a technique you would use to get the above information.
(List the steps in your technique)