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PostgreSQL?   PostgreSQL is a powerful, open source object-relational database system with over 30 years of active development that has earned it a strong reputation for reliability, feature robustness, and performance. PostgreSQL has earned a strong reputation for its proven architecture, reliability, data integrity, robust feature set, extensibility, and the dedication of the open source community behind the software to consistently deliver performant and innovative solutions. PostgreSQL runs on all major operating system, has been ACID-compliant since 2001, and has powerful add-ons such as the popular PostGIS geospatial database extender. It is no surprise that PostgreSQL has become the open source relational database of choice for many people and organisations. Why use PostgreSQL? PostgreSQL comes with many features aimed to help developers build applications, administrators to protect data integrity and build fault-tolerant environments, and help you manage your dat

SQLite3 SQLite3 is a very easy to use database engine. It is self-contained, serverless, zero-configuration and transactional. It is very fast and lightweight, and the entire database is stored in a single disk file. It is used in a lot of applications as internal data storage. The Python Standard Library includes a module called "sqlite3" intended for working with this database. This module is a SQL interface compliant with the DB-API 2.0 specification. Using Python's SQLite Module To use the SQLite3 module we need to add an import statement to our python script: import sqlite3 Connecting SQLite to the Database We use the function sqlite3.connect to connect to the database. We can use the argument ":memory:" to create a temporary DB in the RAM or pass the name of a file to open or create it. # Create a database in RAM db = sqlite3 . connect ( ':memory:' ) # Creates or opens a file called m