Hi,
I need to develop a query engine which can take information related to
different layers from different web services, & then I have to run a query
on them.

e.g., Corresponding to a given area, my query engine has fetched 3 layers
from 3 different Web Services.
1 layers has information about the road network.
Another has information about the railway network of that area.
3rd layer has information about the buildings in that area.

Now, I have to show on a map all the state highways( a feature of road
networks) & all the railways networks withing 5 km of a particular building.

Will someone help me on how to implement this query engine???


Thanks
Siddharth

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