  First the basic definition of information as a selection from a set of
possibilities resp. domain is recalled. This also applies to digital
information. The bits of digital information are parts of number sequences
which represent a selection from a set of possibilities resp. domain. For
faultless conversation sender and receiver of information must have the same
definition of the domain (e.g. of language vocabulary). Up to now the
definition of the domain and of its elements is derived from context and
knowledge. The internet provides an additional important possibility: A link to
a conjoint uniform definition of the domain at unique location on the internet.
The associated basic information structure is called "Domain Vector" (DV) and
has the structure "UL (of the domain definition) plus sequence of numbers". The
"UL" is not only "Uniform Locator" of the domain definition. It also identifies
a certain kind of information for later comparison and search. It can be a
Uniform Resource Locator (URL) or an abbreviated equivalent, e.g. a hierarchic
numeric pointer or a short local pointer to a table with global internet
pointers. The DV structure can be used as general carrier of information which
is language independent and more precise than language. A domain which contains
DVs is called "Domain Space" (DS) and is defined as metric space. This allows
similarity search according to user defined criteria, so that any kind of
definable information can be made comparable and searchable according to user
selected (relevant) and objectifiable (globally uniform) criteria. DS
definitions can be reused in new DS definitions. Their elements, the DVs, are
automatically globally uniformly identified and defined. Obviously such
conjoint definition of comparable information has great potential. It also can
avoid interoperability problems and redundant programming and so save high
costs.
