Database Reference
In-Depth Information
Fig. 4.
Duration
for transformation of Test 1 (logarithmically scaled)
Fig.
5.
Duration for transformation of Test 2
Fig. 4 shows that our pr
Zorba. Furthermore, for lar
only faster than the indirec
but even faster than only tra
The second test uses an
low the root node <Countr
before each M'th <CityAt>
<MinDistance> nodes and
XPath expression
$dis/foll
cities are selected that are
transformation's target docu
rototype is able to perform the transformation faster t
rge source documents transforming compressed data is
t way via decompression, transformation and compress
ansforming uncompressed data.
XML source file which consists of N <CityAt> nodes
ry>. The source file also contains a <MinDistance> n
node. The XQuery evaluated for that source file selects
uses each of these nodes as a context node for the relat
owing-sibling::CityAt
. Thus, for each <MinDistance>
more distant. Again, the selected nodes are copied to
ument. For a given N, reducing M leads to an increas
than
not
sion
be-
node
s all
tive
all
the
sing
