Tell me about the Greenplum Architecture

Answer 1

Greenplum Database is able to handle the storage and processing of large amounts of data by distributing the load across several servers or hosts. A database in Greenplum is actually an array of individual PostgreSQL databases, all working together to present a single database image. The master is the entry point to the Greenplum Database system. It is the database instance where clients connect and submit SQL statements. The master coordinates the work amongst the other database instances in the system, the segments, which handle data processing and storage.