Here's something to start with, with my suggestions for field definitions in the Access database:

Ben's categoriesDublinCore field(s)my notes
TitleTitletext field, up to 100 characters
Author / editor / transcriberCreatortext field, up to 100 characters; may be delimited
Date of publicationDatejust year
Physical descriptionFormattext field, up to 100 characters
URL for Web resourcesRelationtext field, up to 100 characters
Place of publicationPublishertext field, up to 100 characters
PublisherPublisher
Synopsis/abstractDescriptionmemo field
RelationshipsDescriptionmemo field
Spatial coverageCoveragefields for lat and long, 5 significant digits
Temporal coverageCoveragefields for dates in various formats
SubjectSubjectmultiple text fields, 100 characters each
Contributortext field, up to 100 characters
Typetext field, up to 100 characters
Identifiertext field, up to 100 characters --might be Annie call number, etc.
Sourcetext field, up to 100 characters --might be URL
Languagetext field, up to 25 characters (usually English)
Rightstext field, up to 100 characters (copyright, etc.)