Are there any other models of file storage/retrieval that are useful for a Wiki other than a git-repository or a SQL (or similar) database?
My recent learning tells me that the github model requires more space on the user's computer than a database model would. Since the contributor would be 'checking out' huge chunks of the repository to 'work on' and then 'reintegrate.' While a database model requires logging in to the actual server for actions (uploading, downloading, editing, etc.), it does not put a load on the contributor's storage just their connection status and bandwidth.
The git-repository model keeps track of changes and historical states by design. The database model does it by extension and module choice.
Either way, once we have a completed collection of 'marked-up' video and tagged primary transcripts, we will need a secure archive separate from the deployed and active site - perhaps a git-repository would be useful here, if it manages video/audio as well as text files well.
And, very soon, we will need a model that can handle huge amounts of data easily. So, light programs for small companies, individual blogs (with little wiki modules tacked on), and small teams are going to be outgrown very soon.
I like the idea of keeping the discussion of the project mostly here on the forums. It will keep transparency high and attract more contributors in the long run.
I think Signum uses Wordpress for some of its website structure. And I know Wordpress does not have a good Wiki module/extension. So, we will need to deploy something different even within Signum's own authority (plus, as Project ExLOR grows database sharing of an existing Wordpress installation would be hard for both the project website and the university website).
All the things that Wobh listed are backend management set-ups in the three open-source wiki programs that I have tested over the past few years. They all seem to be built into the structure and core extensions of most of the database-sourced options that I have seen. The decisions still need to be made, but the structures are there in the open-source software.
But, are there better products we should consider?