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PostgreSQL has been available on the market for more than 25 years. It has grown to be a mature offering for data services. The PostgreSQL database is easy to set up and you’ll find yourself making instances where you wouldn’t have bothered with Oracle. Postgres is a true open source solution, this gives you flexibility and portability. It is similar to Oracle's Oracle database, but there are similarities baked into the product that are all very similar to the system.