The benefit of Read Uncommitted is that it offers maximum concurrency; transactions don’t have to wait or be blocked because no shared locks or exclusive locks are given. Under the Read Uncommitted isolation level, a second process can see data before the transaction that changes the data is complete. This is called a dirty read. Another possible con is the lost update: a change made by a first process is changed by a second one.

This morning I was reading an article about HTML 5 and file drag and drop. In this article a site was mentioned that lists the supported features of the major browsers. This site is http://caniuse.com/. I didn’t know this site existed eventhough I have worked with web technologies for years now. Well, you are never too old to learn.