<s>
OMTROLL	B-Language
is	O
an	O
object-oriented	B-Application
modeling	I-Application
idea	O
that	O
has	O
been	O
formulated	O
by	O
combining	O
the	O
(	O
object-modeling	B-Application
technique	I-Application
)	O
and	O
the	O
formal	O
specifications	O
of	O
the	O
TROLL	O
language	O
.	O
</s>
<s>
OMTROLL	B-Language
was	O
created	O
to	O
exploit	O
the	O
practical	O
analysis	O
of	O
object-modeling	B-Application
technique	I-Application
,	O
eliminate	O
its	O
ambiguity	O
and	O
vagueness	O
,	O
and	O
to	O
exploit	O
the	O
formal	O
system	O
specifications	O
provided	O
by	O
TROLL	O
.	O
</s>
<s>
Object-modeling	B-Application
technique	I-Application
life	O
cycle	O
analysis	O
concentrates	O
mainly	O
in	O
software	O
development	O
practice	O
whereas	O
TROLL	O
,	O
oblog	O
,	O
FOOPS	O
etc	O
.	O
</s>
<s>
Object-modeling	B-Application
technique	I-Application
model	O
of	O
a	O
system	O
consists	O
of	O
:	O
</s>
<s>
The	O
object	B-Application
model	I-Application
represents	O
the	O
structure	O
of	O
objects	O
in	O
the	O
system	O
,	O
similar	O
to	O
an	O
ER	B-Architecture
diagram	I-Architecture
.	O
</s>
<s>
Now	O
the	O
drawback	O
of	O
object-modeling	B-Application
technique	I-Application
model	O
is	O
that	O
the	O
various	O
operations	O
on	O
the	O
object	O
are	O
spread	O
over	O
into	O
3	O
different	O
models	O
,	O
causing	O
a	O
relationship	O
among	O
the	O
entities	O
in	O
different	O
models	O
(	O
like	O
the	O
dynamic	O
and	O
object	B-Application
model	I-Application
)	O
to	O
become	O
abstract	O
.	O
</s>
<s>
Object	B-Application
modelling	I-Application
approaches	O
do	O
not	O
support	O
interaction	O
between	O
objects	O
,	O
so	O
the	O
communication	O
diagram	O
is	O
introduced	O
in	O
OMTROLL	B-Language
.	O
</s>
<s>
are	O
used	O
to	O
construct	O
new	O
data	O
types	O
such	O
as	O
lists	O
,	O
records	O
,	O
enumeration	B-Language
etc	O
.	O
</s>
