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This class can be used to import directly from a GIS enabled database.
MS SQL Server, Oracle and PostgreSQL ("PostGIS") all offers storage of gis data, directly inside the database.
We have implemented it for all three and for:
•32/64 bit DLL
•Delphi XE7 - XE8 - 10 - 10.1 - 10.2 - 10.3 - 10.4.
This class is available with Pro only.
For .NET you need
•MS SQL: Microsoft.Data.SqlClient
•PostgreSQL: Npgsql.dll (tested with version 3.1.10)
For the DLL version it is all compiled into the DLL.
For the VCL version you need to have UniDAC Pro installed too (version 6.4.15+ is required).
Example of importing the same dataset (Brazil, 6.5 million links), from different data sources:
Full setup: Geography, Z-levels, attribute, road name, limit and external ID.