Now cloudstack has some pretty good api documentation on-line making it pretty simple to figure out what call you need to do what quite simply. All fair and good, what I will like to see though is an equivalent of that for the database. As one works with the product overtime one gets to figure out what many of these things are and it is also possible to make these out to some extent by browsing and searching the githhub repository. In a nutshell, this is no place to go and just simply look up a field name and get a summary of what it does.
Whereas the api calls are quite extensive, there are just some things that one has to do via the database, some update/edit functions are missing from many of the calls and knowing the right entries in the database are essential for many of such things.