Learning_PostgreSQL_10，_2nd_Edition下载

PostgreSQL is an open source object relational database management system. It emphasizes extensibility and competes with major relational database vendors such as Oracle, SQL Server, and MySQL. Due to its rich extensions and open source license, it is often used for research purposes, but PostgreSQL code is also the base for many open source and commercial database management systems such as Greenplum and Vertica. Furthermore, start-ups often favor PostgreSQL due to its licensing