Call now: (800) 766-1884  


 SQL Server Tips
 SQL Server Training

 SQL Server Consulting
 SQL Server Support
 SQL Server Remote DBA

 SQL Server Scripts
 Scripts Menu





SQL Server xxx

SQL Server Tips by Gama and Naughter Consulting



A Geographic “Datum” is a standard on which coordinates are calculated on a map, chart or survey system. The basis of a datum is based on a reference ellipsoid as we have already discussed and before the advent of satellites, various techniques such as plumb bobs, surveying tools and astronomical observations. From this original starting point, further secondary points can be extended across a region or country. These Datum points are often found as concrete piers on the tops of mountains. A multitude of datums have developed as different countries and regions in the world started producing maps for their area. With the recent develop of systems such as GPS; an important area in GIS is in the correct translation of coordinates from one datum to another. This will be the focus of one of the XP’s implemented in XP_GIS and is discussed later in this chapter.

The above book excerpt is from:

Super SQL Server Systems
Turbocharge Database Performance with C++ External Procedures

ISBN: 0-9761573-2-2
Joseph Gama, P. J. Naughter





Burleson Consulting Remote DB Administration







Burleson is the America's Team

Note: The pages on this site were created as a support and training reference for use by our staff of DBA consultants.  If you find it confusing, please exit this page.

Errata?  SQL Server technology is changing and we strive to update our SQL Server support information.  If you find an error or have a suggestion for improving our content, we would appreciate your feedback.  Just  e-mail:and include the URL for the page.

Burleson Consulting
SQL Server database support


Copyright © 1996 -  2013 by Vaaltech Web Services. All rights reserved.

Hit Counter