Geographic Information Systems Stack Exchange is a question and answer site for cartographers, geographers and GIS professionals. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

What are the basic that one should know about geometry datatype? How is it computed ? Why do we need geometry data type?

Edit: I wanted to know why there is a different datatype called geometry. Is geometry some basic data type plus location information or more! How to understand the data in this column?


From MSDN: The planar spatial data type, geometry, is implemented as a common language runtime (CLR) data type in SQL Server. This type represents data in a Euclidean (flat) coordinate system.

share|improve this question
How basic do you need - point x,y, line xy,xy polygon xy1,xy2,xy3,xy1 – Mapperz Nov 7 '11 at 15:11
@Mapperz Thank you so it's that simple !! – kinkajou Nov 7 '11 at 19:10
I think you need to explain more. What are you trying to understand? – Nathan W Nov 7 '11 at 22:21
Are you refering to the difference between a "Geography" and a "Geometry" datatype as seen in MS SQL 2008? – CatchingMonkey Nov 8 '11 at 10:07
@ASPMapper No I mean why geometry?How is it interpreated? – kinkajou Nov 8 '11 at 12:14
up vote 1 down vote accepted

Hope This will help you

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.