A common task an ETL tool has to deal with nowadays is the emergence of data containing a form of geographical information. Just like any other type of data – monetary values, times and dates, etc. – geographical data pose interesting challenges to an ETL developer. Working with different Coordinate Reference Systems (CRS) within a project is a common difficulty. Typically, two or more software systems need to exchange geographical data, but each one of them uses a different CRS.
March 01, 2013