-- for "chemical" cf. http://dx.doi.org/10.1021/ci9803233 by the ACS
img_major_mime ENUM("unknown", "application", "audio", "image", "text", "video", "message", "model", "multipart", "chemical") NOT NULL default "unknown",
-- minor part of a MIME media type as defined by IANA
-- the minor parts are not required to adher to any standard
-- but should be consistent throughout the database
-- for "chemical" cf. http://dx.doi.org/10.1021/ci9803233 by the ACS
img_major_mime ENUM("unknown", "application", "audio", "image", "text", "video", "message", "model", "multipart", "chemical") NOT NULL default "unknown",
-- minor part of a MIME media type as defined by IANA
-- the minor parts are not required to adher to any standard
-- but should be consistent throughout the database