Relationship and difference between Greenplum and PostgreSQL

Greenplum is open-source software for massively parallel database used for reporting, analytics, machine learning, artificial intelligence, and high concurrency SQL. Greenplum database is described as big data technology with a basis of MPP architecture and the PostgreSQL open-source database technology. PostgreSQL is a popular free and open-source relational database management system that emphasizes extensibility and SQL compliance. The tool has earned credibility because of its reliability for use and the feature for robustness and performance. 


Having a basis on PostgreSQL, Greenplum provides sufficient control over the software under deployment, thereby reducing the vendor lock-in and allowing for open influence on product direction. The relationship between PostgreSQL and Greenplum is depicted under the course that Greenplum is an MPP adaption of PostgreSQL. Greenplum has enhanced optimization for warehousing and big data analytics on large databases and performs well in a transactional environment. Regarding the performance level of both Greenplum and PostgreSQL, the use of Greenplum is exceeding essential in a way it is applicable in a large data warehouse environment.

Considering the workability of both PostgreSQL and Greenplum, both are open-source software products used in database management systems with their range of features. PostgreSQL is a popular and widely used open-source software product in relational database management systems. On the contrary. Greenplum is an analytical database platform that is built on PostgreSQL. Greenplum also is an open-source software product applicable in a relational dataset management but with automatic data sharding, parallel query execution and advanced storage and compression options.

PostgreSQL is a popular extended and advanced object-relational database management system with proved support for an extended subset of SQL inclusivity of transaction, foreign keys, subqueries, triggers, and user-defined types. Greenplum is highly related to PostgreSQL in a way they are both classified as database tools with their performance on analytical and business intelligence workloads. Both the database tools are efficient, reliable, and scalable in the long-term configuration and deployment of applications.

The close relationship between Greenplum and PostgreSQL as both are database tools because Greenplum is an adaption of PostgreSQL. This is considered in a way Greenplum underwent optimization for data warehousing with robust storage, computation, and analytics of large data sets that perform well in a transactional environment. Their performance is viewed with many similarities is only that their domain of applicability differs depending on the power and nature of handling the computational task with performance-based features. PostgreSQL is best applicable in small databases and best when one needs OLTP. The use of Greenplum is made relevant on their robust quality and ability to perform larger workloads in large data warehousing environments with their knowledge of performing both transactional and computational processing.


Most importantly, the use of PostgreSQL is considered reliable is one that requires OLTP in smaller database sizes. This describes PostgreSQL as an OLTP for database management systems. In addition, Greenplum technology is some overhead for the transaction processing system as it is termed a distributed system. In contrast, PostgreSQL’s can go to hundreds of thousands of transaction processing systems with light tuning. This is described after considering how WebApp blackened running can always create an OLTP workload.

However, the use of PostgreSQL is made challenging when one needs an OLAP workload. The open software tool provides no data compressing feature, no columnar store when in need in OLAP workload not automatic sharding or scalability and no parallel query execution for deep analytical queries on large data sets. In contrast, the applicability of Greenplum is made evident in a way the technology crunches the data stored in parallel form to the cluster. This helps the workability of both PostgreSQL and Greenplum in their applicability in OLAP workload.

The most distinctive feature is how Greenplum uses parallel processing, thereby executing queries on large data sets orders of magnitude faster than can be achieved in non MPP systems like PostgreSQL. The small read queries are run, as the master node requires communication with the data nodes underlying for efficient, effective, and easy retrieval of answers to all the queries. The performance of Greenplum is dependent on the magnitude of queries to be read and answered. On the contrary, PostgreSQL uses a single multicore processing server during query processing.

The underlying difference between PostgreSQL and Greenplum is the structure of both the open-source software. Greenplum is both a data warehouse and transactional or operational data store. This makes it easier for Greenplum to parallelize both the computational and storage process over multiple instances in PostgreSQL on distinct and separate physical servers. This provides for beneficial attributes for both the analytical workloads and transactional workloads. The use of Greenplum for computation and data analytics is made efficient with its distinguishable feature of data warehousing like the columnar storage and compression feature. Most importantly. Greenplum is designed to handle the transactional processing events in a system simultaneously though it may have a downside as that of PostgreSQL.

Most importantly, Greenplum as a database tool employs a shared-nothing architecture as compared to PostgreSQL. This explains how Greenplum has servers or nodes in the cluster and has its independent operating system. Storage infrastructure and memory. The database tool, with its architecture, only shares the network infrastructure between the nodes that is essential for allowing the simultaneous communication and transfer of data in the system. On the other hand, the PostgreSQL database tool employs the client-server architecture. This means that the database architecture can share the memory, storage area, and operating systems. This is done so it has shared memory and processes can work together and enables the building of an instance that facilitates access to data. Then, the instance created is relevant in their connection to the client programs for reading and writing operations in the physical servers. The difference in their architecture gives out the differences in the mode of processing. The Greenplum handles the parallel processing elements in the system because of its complexity and robust nature and the PostgreSQL ability to perform single processing.

The existing difference between PostgreSQL and Greenplum is the way Greenplum can use append optimized data storage compared to PostgreSQL. On the contrary, PostgreSQL is a database tool that has an advantage over query planning in addition to the legacy query planner. This distinguishes it from the Greenplum database tool. Most importantly, the Greenplum database tool has the option of the utilization of column storage. This data store has been logically organized in a table, for instance, rows and columns. This categorizes Greenplum as a database tool that has provisions for compression features on all the append-optimized tables used in the column storage in relational database systems.

The architecture of PostgreSQL makes it easy for their modification and supplementation to provide support for the parallel structure of the Greenplum database tool. The Greenplum database feature called the interconnect allows for communication over high speed network protocols between the distinct PostgreSQL instances created, making them behave in one logical way and viewed as one database image. Greenplum can be optimized to handle large data sets as opposed to PostgreSQL. The Greenplum dataset tool is essential in physical servers and can use declarative partitions and sub partitions to enable the generation of partition constraints.


Despite the differences in architecture and features, both the Greenplum and PostgreSQL are viewed as related database tools. The relationship between PostgreSQL and Greenplum explains how Greenplum is an extension or rather an adaption of PostgreSQL. The functionality of both the database tools in parallel and single processing of computation problems and data analytics provides a preference for which tool to use. Both the tools are best applied in the computation environment depending on the nature of the task. PostgreSQL is best suited in small-size databases using OLTP, and Greenplum best applied in extensive data analytics using OLAP.