Difference between revisions of "Well known binary"
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− | | ISO 19125-2:2004, Geographic information – Simple feature access – Part 2: SQL option | + | | [http://www.iso.org/iso/home/store/catalogue_tc/catalogue_detail.htm?csnumber=40115 ISO 19125-2:2004], Geographic information – Simple feature access – Part 2: SQL option |
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| Application | | Application |
Revision as of 09:06, 1 June 2016
Overview
Full name | Well known binary (WKB), defined in ISO/IEC 13249-3:2011, Information technology -Database languages -- SQL multimedia and application packages Part 3: Spatial |
Version | Edition 4 |
Amendments | None |
Corrigenda | None |
Published by | ISO/IEC JTC 1/SC 32, Data management and interchange |
Languages | English |
Online overview | Not available yet |
Type of standard | ISO International Standard
Application level |
Related standard(s) | ISO 19125-2:2004, Geographic information – Simple feature access – Part 2: SQL option |
Application | WKB is defined in ISO/IEC 13249-3:2011. WKB is a hexadecimal encoding that can be used to define geometry. Geometries are expressed as a stream of bytes that is not human readable. The type of geometry is specified followed by the coordinates of the nodes. |
Implementation benefits | In ISO 19125-2, WKB is an option of describing geometries. This is an optimal format for databases, since the geometry is expressed as a stream of bytes and can easily be exchanged. However, the encoding does not support any analysis, such as measurements. |