International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B2. Istanbul 2004 
  
  
  
RealEstatelD 
= 
  
getParcelGeometry 7 0 
= ie : 
> 
  
  
Returns parcel vertiges 
and bounding box 
coordinates 
  
getZoningPlanlD 
  
Returns Zoning Plap Number 
that cadastral parce is located 
a: 
—É 
  
getZoningPlanBlock 
  
: > 
Returns an array that includes block 
ID and vertices cootdinates 
ut 
  
vectorSuperimpose 
= 
  
Returns intersected parcel and block 
in SVG format 
— 
  
getZoningPlanBlockAttributes 
  
Returns an array thät includes block 
attributes 
E 
  
  
  
getParcelAttributes 
  
  
  
_, Returns an array that include parcel attributes 
  
  
  
a 
Zoning Plan Form: 
  
  
  
  
Figure 4. The UML sequence diagram of getParcelZoningPlan 
service 
In the Web Services architecture, a client does its job by simply 
calling the Web Services of some servers. A client in a specific 
application may become a server in another. That is everybody 
offers some Web Services for some others. However, there may 
still be some tasks that a client has to perform, which are both 
client-specific and may not be practical to be defined as a Web 
service. A characteristic example to such tasks might be to 
display the length of a parcel boundary on the boundary line, 
which is often needed in many applications of the municipality. 
We have designed a toolbar for the client side using JavaScript, 
Scalable Vector Graphics elements, and Document Object 
Model. Using this toolbar, a user on the client can perform such 
functions as measuring distances, computing line intersections, 
computing intersecting areas, displaying x, y coordinates, 
displaying information about objects, move objects. Figure 5 
shows the toolbar and the results of performing some functions. 
px a ——Á es 
EH: --099 2185 Gérant re Oi Si Er 
     
  
  
  
  
  
  
  
  
  
  
  
  
    
E] bod CSS procanty or desochir decer a TTT BE3eee 7 
Figure 5. Response of getParcelZoningPlan Web service 
| User | [getParcelZoningPlan] [CO Server] | ZPO Server |[LTO Server] 
= 
666 
5. CONCLUSIONS 
The need for interoperability, the ability by which the different 
applications can talk and cooperate with each other, is more 
pressing than ever. Interoperability infrastructures are needed in 
such sectors as business-to-business (B2B), government-to- 
citizens (G2C), government-to-business enterprises (G2B), and 
government-to-government (G2G) to increase revenues and to 
enable high quality, low cost services. In this work, we have 
proposed Web services for e-government and e-municipality 
interoperability infrastructure. We have compared traditional 
and Web services scenarios for a traditional service of the 
Municipality of Trabzon, Turkey. As a result we have found 
that Web services enable quick and high quality services. In 
addition web services would enable cost savings in software 
development and service provision. Web services do have 
problems like security. We have not tackled these problems in 
this study. We have only examined the usability of a new 
technology, Web services, for the e-municipality infrastructure. 
Since e-government and e-municipality share similar structures 
and problems, the results of this work is valid within the e- 
government context as well. 
References 
Barefoot, D., 2002. Web services primer, CapeScience, 
http://www.capeclear.com (accessed 03 June 2003) 
Cape Clear, 2003, Cape Clear 4 User's Guide, Cape Clear 
Software, http://www.capeclear.com. (accessed 01 May 2003) 
Cómert, C., Akinci, H., 2002. Application Development in an 
interoperable GIS environment: A new system for real estate 
taxation in Turkey, 3rd International Symposium on Remote 
Sensing of Urban Areas, June 11-13, Istanbul, Turkey, Vol. I, 
pp.200-205, 
Hecht L., 2002. Web Services Are the Future of Geoprocessing, 
GEO World, June 2002. 
OecE, 2003. E-Government Interoperability Framework (EGIF), 
Office of the e-Envoy. Part!: Framework, Version 5.0, 
httip://Www.e-envoy.gov.uk/assetRoot/04/00/30/48/ 
Sahin. N., 2003. Sahin, N., Designing Web services for 
e-municipality, MSc. Thesis, KTU Geodesy and 
Photogrammetry Department, August 2003, Trabzon, Turkey 
(in Turkish). 
World Bank, 2002. E-government handbook for developing 
countries, Center for Democracy and Technology, World Bank. 
W3C, 2002. Web Services Architecture. W3C Working Draft 8 
August 2003, http://www.w3.org/TR/2002/W D- Web servisleri- 
arch-20021114/ (accessed 17 Sep. 2003) 
  
Acknowledgements 
The author thanks to Karadeniz Technical University Research 
Fund for providing financial support to this study, "AND 
Company” for supporting registration fee, and TUBITAK (The 
Scientific and Technical Research Council of TURKEY) for 
BAY G scholarship. 
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