using an object oriented data model. We discuss the
query's patterns of large objects in GIS applications
Support In POSTGRES." Sequoia 2000
Technical Report 93/30. Department of
any data and propose an integrated technique that uses data Electrical Engineering and Computer Science,
ing three compression, ordering, abstraction, indexing and University of California at Berkeley, May.
to get all browsing to improve the system performance on Wallace, G.[1991]: “The JPEG Still Picture
second, | large object handling. Using several examples we Compression Standard." Communications of
using the | have shown that these techniques can the ACM, Vol.34, No.4, April.
gainst the | significantly improve the system performance, Wegener K, V. Lum, and C. Wu[1989]: "Image
a to the | especially for network based GISs. Management in a Multimedia Data Base
System." Visual Database Systems, T.
The future work includes developing methods that Kunii(Editor), Elsevier Science Publishers B.
age files can automatically generate and update DRAD and V. (North-Holland).
Enclosing DAD in GIS databases. We plan to use export Wiederhold G. J. Brinkley, R. Samadani, and R.
database. system in this respect. In addition, we plan to do Clauer[1989]: "Model-Driven Image Analysis
retrieves more tests on the performance of the network based to Augment Databases." T. Kunii(Editor),
yn ABCD GISs using the proposed methods. Elsevier Science Publishers B. V. (North-
ot only Holland).
involved, ACKNOWLEDGMENTS Zhou Q.[1989]: “A Methods for Integrating Remote
Sensing and Geographic Information Systems”
Special thanks go to Steve Wilkinson for going Photogrammetry and Remote Sensing
|-bit map through initial drafts of the paper and providing Engineering. Vol. 55, No. 5, May.
ize of 256 useful feedback and UNISYS GIS for providing the ^ Zhou W., W. Brunner and S. Wilkinson[1991]: "Full
' Cost is 1: time to work on the paper. Integration of Remote Sensing Functionality
into A Vector Based GIS." Proceedings of
REFERENCES GIS/LIS'91, Atlantic, George, USA, Nov. 11.
Zhou W. and S. Wilkinson[1993]: "Large
Chang $S.[1990]: "Principles of Pictorial Heterogeneous Database Query and
function Information System Design.” Prentice Hall. Visualization.” Presented at GIS/LIS'93,
s on the Chang S. and A. Hsu[1992]: "Image Information Minneapolis, Minnesota, USA, Nov. 11.
Chis may Systems: Where Do We Go From Here?” IEEE
Transactions On Knowledge and Data
Engineering. Vol. 4, No. 5, October. hod 12 bi
function Deux O. et al[1991]B "The O2 System.”. S JPEG RLC sq act, eif
esolution Communications of The ACM. Vol. 34, No. 10, |?!7€ | (0.75) RLC | Resolution
Imost the October. 12MB
‘ormance Gupta A., T. Weymouth and R. Jain[1992]: (original) 1.2 MB | 2MB | 1-0MB | 0.35MB
"Semantic Queries in Image Databases."
Visual Database Systems, II E. Knuth and L.M. Table 1: A Scanned 24-bit Map File Sizes
ap as an Wegner(Editors) Elsevier Science Publishers B. ^ After Compression(in MB)
different V. (North-Holland).
Hughes, J. G.[1991]: “Object-oriented Databases.” uery ;
a Prentice Hall International. Cost One two | three | four | five
Lohman G., B. Lindsay, H. Priahesh and K. old 38 240 15 162 423
Schiefer[1991]: "Extensions to Starburst:
that the Objects, Types, Functions and Rules." new | 35 2.8 2 2 27
query on Communications of The ACM. Vol. 34, No. 10,
to set up October. :
'elatively Orenstein J. and F. Manola[1988]: "PROBE Spatial Table 2: Various query Costs in Second
je can be Data Modeling and Query Processing in An
Image Database Application.” IEEE
Transactions On Software Engineering. Vol. 14,
\TIONS No. 5, May.
Samet H.[1989]: " The Design and Analysis of
chniques Spatial Data Structures." Addison Wesley.
> system Sequoia 2000 Technical Report 93/11. Department
ling. Our of Electrical Engineering and Computer Science,
nd Row University of California at Berkeley.
emented Stonebraker M. and M. Olson[1993]: "Large Object
219