Defines external data source, which are linking to Tables. Usually external links data mapped as one to
many to one of the table dimensions. For example if you have person as a dimension, external link may contain info
about address, so you can query data by city.
Defines external data source, which are linking to Tables. Usually external links data mapped as one to many to one of the table dimensions. For example if you have person as a dimension, external link may contain info about address, so you can query data by city.