Schema naming conventions changed from "."-separated with no case consistency to "_" and camelCase with the introduction of meas_base.  I remember writing the new conventions down somewhere, but the first two places I looked:

 - afw::table::Schema class docs

 - afw::table overview page in Doxygen

...document the old convention.

Fix those, ideally by locating the original text (maybe Confluence somewhere?) and transferring it to those locations.