<s>
Virtual	B-Language
Database	I-Language
Manager	I-Language
(	O
VDB	O
)	O
is	O
software	O
designed	O
to	O
represent	O
some	O
non-relational	O
data	O
in	O
a	O
virtual	O
data	O
warehouse	O
without	O
copying	O
the	O
original	O
data	O
and	O
allow	O
a	O
real	O
time	O
access	O
to	O
the	O
data	O
.	O
</s>
<s>
VDB	O
is	O
a	O
framework	O
written	O
in	O
Java	B-Language
allowing	O
access	O
to	O
data	O
via	O
the	O
standard	O
SQL	B-Language
language	I-Language
through	O
a	O
conventional	O
JDBC	B-Application
driver	I-Application
.	O
</s>
<s>
The	O
data	O
are	O
represented	O
into	O
its	O
virtual	O
data	O
warehouse	O
to	O
facilitate	O
the	O
usage	O
of	O
analysis	B-Application
and	I-Application
reporting	I-Application
tools	I-Application
.	O
</s>
<s>
Because	O
of	O
the	O
need	O
for	O
independence	O
and	O
neutral	O
access	O
to	O
information	O
in	O
a	O
governance	O
process	O
,	O
SAP	O
Business	O
Objects	O
 '	O
administrators	O
and	O
managers	O
need	O
to	O
analyse	O
the	O
content	O
of	O
the	O
platform	O
,	O
such	O
as	O
security	O
control	O
,	O
license	O
compliance	O
or	O
document	O
relationships	O
,	O
by	O
using	O
standard	O
reporting	O
tools	O
which	O
are	O
used	O
standard	O
SQL	B-Language
.	O
</s>
<s>
SAP	O
BusinessObjects	O
Enterprise	O
repository	O
's	O
structure	O
does	O
not	O
use	O
a	O
normalized	B-Application
design	I-Application
,	O
although	O
it	O
is	O
physically	O
stored	O
in	O
a	O
relational	B-Application
database	I-Application
.	O
</s>
<s>
These	O
metadata	O
are	O
not	O
accessible	O
through	O
standard	O
SQL	B-Language
.	O
</s>
<s>
To	O
solve	O
all	O
these	O
issues	O
,	O
SoftNtic	O
has	O
decided	O
to	O
design	O
the	O
product	O
–	O
Enterprise	O
Connector	O
–	O
which	O
permit	O
a	O
live	O
and	O
real	O
time	O
SQL	B-Language
access	O
to	O
the	O
repository	O
and	O
its	O
founder	O
,	O
Thomas	O
Trolez	O
,	O
got	O
the	O
idea	O
of	O
Virtual	B-Language
Database	I-Language
Manager	I-Language
for	O
the	O
core	O
engine	O
which	O
provide	O
a	O
real	O
time	O
representation	O
of	O
the	O
needed	O
data	O
in	O
a	O
virtual	O
data	O
warehouse	O
which	O
permit	O
the	O
usage	O
of	O
standard	O
analysis	B-Application
and	I-Application
reporting	I-Application
tools	I-Application
.	O
</s>
<s>
To	O
allow	O
a	O
representation	O
of	O
the	O
data	O
in	O
a	O
virtual	O
data	O
warehouse	O
without	O
copying	O
them	O
,	O
VDM	O
designed	O
a	O
virtual	O
star	B-Application
schema	I-Application
consisting	O
of	O
virtual	O
fact	O
and	O
dimension	O
tables	O
.	O
</s>
<s>
These	O
tables	O
are	O
virtually	O
linked	O
in	O
an	O
n	O
,	O
m	O
relation	O
and	O
the	O
JDBC	B-Application
driver	I-Application
exposes	O
the	O
virtual	O
database	O
model	O
as	O
though	O
the	O
original	O
data	O
were	O
held	O
in	O
these	O
"	O
tables	O
"	O
.	O
</s>
<s>
When	O
an	O
SQL	B-Language
request	O
is	O
received	O
by	O
the	O
JDBC	B-Application
driver	I-Application
,	O
it	O
is	O
analyzed	O
with	O
SoftNtic	O
's	O
Lexer/parser	O
,	O
determining	O
:	O
</s>
