From building 25 years ago building databases for the Dutch Navy, I’ve been helping customers with data and database technology ever since. More recently with open source software like Greenplum MPP, Hadoop, Postgres and many others.
Talks I've Given
Introduction to PostGIS and its usage
Featuring Martin Visser
Most developers and DBAs have heard of PostGIS but not had an opportunity to use it. This talk gives an overview of what it does and some examples of how it can be used and why you would use it with PostgreSQL.indexes join functions geospatialdata postgis