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challenging 
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n the desire 
  
to solve a common problem identified in a 
number of organizations and institutions 
having different GIS technologies. This is the 
problem of an integrated access of databases 
and data-sets in a heterogeneous computing 
network. 
10. CONCLUSIONS 
Although the Delta-X prototype works with 
GIS data, its architecture, design and 
implementation can be applied to any type of 
data. The successful implementation of the 
Delta-X and Spatial Browser in our Division, 
and the unprecedented capabilities offered to 
all the GIS workstations on our network. 
They can browse through the directory and 
metadata database of the federal government 
data holdings developed by the Inter Agency 
Committee on Geomatics. Data transfer 
between the various GIS databases and 
standard file formats are further proof of the 
validity of our concept and the success of our 
implementation. The unveiling of the 
prototype is scheduled for the ISPRS 
Commission II Symposium and GIS'94 
Conference, June 1994. 
REFERENCES 
Otoo, E., and Allam, M., 1991, A Spatial 
Topographical Data Model: A FirstStep 
Towards Standardisation of GIS Data 
Exchange. Proceedings, The Canadian 
Conference on GIS 91, Ottawa, Ont., Canada, 
March 18-22, 1991, p. 763. 
Medved, J., Petras, J., 1994, The Client- 
Server Architecture of Delta-X, Proceeding, 
ISPRS Commission II Symposium, Ottawa, 
Ont., Canada, June 6-10, 1994, pp. 
Otoo, E., 1994: A Federated Spatial 
Information System: Delta-X, Proceeding, 
ISPRS Commission II Symposium, Ottawa, 
Ont., Canada, June 6-10, 1994, pp. 
Chaly,. C.K., Zhu, W., and Effah, S., 
1994, MetaView: A GIS Spatial Browser - 
Functions and Services, Proceeding, ISPRS 
Commission II Symposium, Ottawa, Ont., 
Canada, June 6-10, 1994, pp. 
351