Re: PostgreSQL flavors

On 02/23/2016 07:51 AM, Sherrie Kubis wrote:
> Hello, my first post to the list, thank you for this place to ask
> questions and get help.
>
> Our management has tasked me with devising a plan to migrate our
> existing databases from Oracle to PostgreSQL.  I’m researching and
> getting familiar with PostgreSQL before getting a Linux box to start
> learning and staging.  I have a long way to go, but it will be fun.
>
> Out of the gate, I can see different PostgreSQL products – PostgreSQL,
> PostgreSQLPlus, EnterpriseDB Advanced Server.

So here's a quick rundown.  I'm sure I'm forgetting some, but here's a
lot of them.  I've deliberately omitted PostgreSQL forks/versions which
are no longer maintained or not commercially available.

Open Source
-----------

PostgreSQL Plus: EnterpriseDB's distribution of PostgreSQL with extra
open source tools included in the installer.

GreenPlum: fork of PostgreSQL 8.2, designed for large-scale big data,
data mining and analytics.

PostgresXC: beta-quality open source fork designed for small clusters of
transaction-processing, ala Oracle RAC.

PostgresXL: fork of PostgresXC, more stable, and a bit more oriented
towards data analytics.

Stado: Version of PostgreSQL with java middleware to do big-data
scale-out.  At various times called ExtenDB and GridSQL.

BigSQL: PostgreSQL+Hadoop for big data scale-out.

PipelineDB: streaming SQL engine built from PostgreSQL.


Closed Source
-------------

PostgreSQL Plus Advanced Server/EDB Server: EnterpriseDB's fork of
PostgreSQL which has Oracle compatibility and some other tools (like xDB
replication).  Sometimes includes features from future versions of
PostgreSQL

CitusDB: latest/greatest big data scale-out version of PostgreSQL.  Soon
to be open-source.

Aster: prior generation of PostgreSQL MPP and Map/Reduce scale-out.

Hadapt: proprietary PostgreSQL+Hadoop fusion.  Based on HadoopDB, which
was open source.

Paraccel: Column-oriented in-memory cluster database built from
PostgreSQL 8.2.

RedShift: Amazon's fork of Paraccel, available only on AWS as a service.

Vertica: Another PostgreSQL-based column store.  Unclear on how much
PostgreSQL code it uses, but uses a version of the PostgreSQL protocol
and psql client.

FAST: Fujitsu's spin of PostgreSQL, optimized for high performance on
high-end hardware.



--
--
Josh Berkus
Red Hat OSAS
(any opinions are my own)