How should the spec handle metadata about a schema?

[nsheff]

We've had some discussion today (and in the past) about what information someone would want to know about a schema. For example, what is its "latest version", who is the author, who is the maintainer, what is it used for, what standards does it use, etc.

Do we want to have a "tags" system? This way you would add a tag to a schema, making it pretty flexible; but then that could cause fragmentation?

Are some terms "higher tier" which are required, or stuck onto the object as attributes rather than tags? How do we decide which are these?

This is a large question and could require some detailed thought. For an initial look, we put metadata about schemas as "maintainer" and "latest_version" only. This could be revisted.