<s>
It	O
is	O
defined	O
as	O
the	O
ratio	O
of	O
the	O
number	O
of	O
instances/records	O
in	O
the	O
system	O
(	O
mostly	O
implemented	O
as	O
a	O
Database	O
)	O
that	O
represent	O
real	O
world	O
entities	B-Architecture
and	O
the	O
number	O
of	O
entities	B-Architecture
that	O
exist	O
(	O
in	O
the	O
real	O
world	O
)	O
and	O
should	O
be	O
represented	O
in	O
the	O
information	O
system	O
according	O
to	O
its	O
purpose	O
.	O
</s>
