Is it simply an example of a painting studio, or is it a particular or specific painting studio?
Sorry, but you have not answered the question "a painting studio" can mean that there are more than one studio.It is a painting studio at our university.
Only if they are specific documents. You need to provide more context for us to say for sure whether you need the article.T And what if I'm going to continue it like this: The genealogy of the Bani Asad clan according to the historical documents. Is it (the) needed before historical documents?