Distributed PostgreSQL Buyer's Guide
How to evaluate vendor claims of Postgres compatibility
In the distributed database market many vendors today make claims about being “Postgres compatible” or “Postgres based”. When contemplating adoption of a distributed Postgres database system careful consideration should be given to the level of effort required to migrate application code. Buyer's should also look at the degree to which the product is outside the mainstream of the Postgres ecosystem, and the implications this raises.
This guide outlines the six key considerations when evaluating a Postgres database as well as recommendations on how to assess what is right for your organization .