The pg gem is the standard PostgreSQL adapter for Ruby and Rails, enabling ActiveRecord to communicate with PostgreSQL databases. It provides low-level bindings to the PostgreSQL client library, ensuring fast and reliable query execution.
Setup involves adding the gem to your Gemfile, running bundle install, and configuring database.yml for PostgreSQL.
Alternatives include mysql2 for MySQL/MariaDB or sqlite3 for development setups.
Setup involves adding the gem to your Gemfile, running bundle install, and configuring database.yml for PostgreSQL.
Alternatives include mysql2 for MySQL/MariaDB or sqlite3 for development setups.