The European Vitis Database
is an example of a website that uses what is called the "frames"
design. What is most noticable about a frame site is that the
only link that works is the one to the Homepage. There are practical
solutions that enable one to 'break out' of the frame, and link
directly to a page of interest. The 'cost' of doing this is
that the normal website navigatation is left behind. The links
I provide below are of this sort (except for the Homepage, of
Frames are an 'Internet issue' and of possible
significance to anyone with an interest in a website, such as
this one. I will put a longer discussion of frames on a Software
page, and announce it.
These links and the comments with them are intended to publicize
the presence of the detailed database descriptor documentation that
is made available at the EVD website. Descriptors define the types
of information that go into a database. Identifying the important
types of information for a new database is a major part of the undertaking,
and the EVD documentation puts a real-world system on display.
There are 3 search-boxes in the left navigation
bar, which represent access tools to the data. At the bottom of
the toolbar are links to information about the database and downloading
it. Those will be further explored.
and Secondary Descriptor Classes Documentation
leads to a simple table containing links to 8 PDF tables which form
the base documentation for the overall EVD Descriptor system. The
content of these files will be expanded on here.
Individual Descriptor Documentation
There are 71 separate descriptors. The system is quite detailed.
This link is to the first of 4 pages of identifications, 20 per
page. Each is accompanied by a link to a PDF documentation file
. More info coming.
There are 28 Passport Descriptors. This is an
internationalization program. Two of the field names are active
links to further coverage. There will be further information here
about the Passport program.
The version of the EVD I downloaded
has, I'm sure, an abbreviated set of fields, and other material,
such as images, has been left out. The full collection of materials
at EVD is very large.
The wider question of large-database
standardization will be pursued.