This appendix lists some of the more major changed in the database
since the release of the first manual dated March 25th, 1997.
On the advice of Nick Ryan who kindly looked through the original
manual, many logical fields were deleted. This is because they
could create inconsistencies in the database. For example, it
would have been possible to select `Yes' for the logical field
Inscribed cross without actually entering data for the
cross in the appropriate table. By removing this field, one is
forced to check for the presence of an inscribed cross by seeing
if there is an entry in the appropriate table.
This table was simplified greatly from the original scheme as it
was felt that in many cases it was difficult or impossible to
assign sites to one of the original categories.
The SITE_TYP table
This table was simplified greatly from its original hierarchical
The DECOR_CD table
This was abandoned as this information did not require cataloging
as part of this database. The primary part of the archive which
will be included are the images which will be stored as part of
the image sub-system.
The formula structure originally used was found to be unworkable
in practice. This has been replaced by the linguistic indexing