That's fine with me.  One other thing to think about, is that it does kind of create a double menu system to a degree.  Alternatively you could adopt an overall structure of more, shorter pages that don't require the use of an in-page menu.  So maybe a page for Create, one for update, etc.  That may be a little easier for a user to navigate, by virtue of fewer clicks to get to "Deleting Data" for example.  You click model, and Deleting data is right there on the left menu.   Shorter, more content-focused pages may be easier to maintain over the long run as well.  Just a thought.