October 14, 2008
Teradata Geospatial, and datatype extensibility in general
As part of it’s 13.0 release this week, Teradata is productizing its geospatial datatype, which previously was just a downloadable library. (Edit: More precisely, Teradata announced 13.0, which will actually be shipped some time in 2009.) What Teradata Geospatial now amounts to is:
- User-defined functions (UDF) written by Teradata (this is the part that existed before).
- (Possibly new) Enhanced implementations of the Teradata geospatial UDFs, for better performance.
- (Definitely new) Optimizer awareness of the Teradata geospatial UDFs.
Teradata also intends in the future to implement actual geospatial indexing; candidates include r-trees and tesselation.
Hearing this was a good wake-up call for me, because in the past I’ve conflated two issues on datatype extensibility, namely:
- Whether the query executer uses a special access method (i.e., index type) for the datatype
- Whether the optimizer is aware of the datatypes.
But as Teradata just pointed out, those two issues can indeed be separated from each other.
Categories: Data types, Data warehousing, GIS and geospatial, Teradata
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[…] Teradata announced Release 13.0 of its software, with lots of new features. I’ll write about some of those in separate posts as well. (E.g., geospatial datatype) […]