<s>
The	O
CourseManagement	B-Architecture
Open	I-Architecture
Service	I-Architecture
Interface	I-Architecture
Definition	I-Architecture
(	O
OSID	B-Architecture
)	O
is	O
an	O
O.K.I.	O
</s>
<s>
OSIDs	B-Architecture
are	O
programmatic	O
interfaces	O
which	O
comprise	O
a	O
service-oriented	O
architecture	O
for	O
designing	O
and	O
building	O
reusable	B-Application
and	O
interoperable	O
software	O
.	O
</s>
<s>
When	O
used	O
in	O
concert	O
,	O
the	O
OSIDs	B-Architecture
comprise	O
a	O
complete	O
system	O
with	O
each	O
service	O
focused	O
exclusively	O
on	O
a	O
particular	O
area	O
.	O
</s>
<s>
For	O
example	O
,	O
the	O
roles	O
related	O
to	O
a	O
CourseOffering	O
are	O
defined	O
through	O
the	O
Authorization	B-Architecture
OSID	I-Architecture
,	O
course	O
work	O
and	O
materials	O
can	O
be	O
defined	O
in	O
the	O
Repository	B-Architecture
OSID	I-Architecture
,	O
and	O
course	O
grades	O
are	O
assigned	O
through	O
the	O
Grading	B-Architecture
OSID	I-Architecture
.	O
</s>
<s>
This	O
factoring	O
of	O
the	O
problem	O
space	O
allows	O
for	O
different	O
implementations	O
of	O
each	O
of	O
these	O
services	O
to	O
be	O
used	O
independently	O
from	O
each	O
other	O
within	O
the	O
same	O
Course	B-Architecture
Management	I-Architecture
software	O
package	O
.	O
</s>
