What is digital elevation model in GIS?

Related questions

1. What is STRM?
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3. What is NASA's SRTM?
4. Is lidar better than radar?
5. What is Aster altitude?
6. How accurate is Google Earth elevation?
7. What is Aster Data?
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9. How do I download digital elevation model?
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Tags

1. #database
2. #surveys
3. #capture
4. #between
5. #digital
6. #points
7. #photogrammetric
8. #known
9. #specialized
10. #relief
11. #rectangular
12. #interpolating
13. #created
14. #model
15. #represents
16. #ground
17. #sources
18. #surface
19. #elevation