This gem is only needed before Rails 7.1, where the trilogy adapter is built in. When you upgrade to a version after 7.1.a, replace this with `gem "trilogy"` to ensure that trilogy itself is available.

ActiveRecord SQL Server Adapter. SQL Server 2012 and upward.

MySQL JDBC adapter for JRuby on Rails.

Postgres JDBC adapter for JRuby on Rails.

AR-JDBC is a database adapter for Rails' ActiveRecord component designed to be used with JRuby built upon Java's JDBC API for database access. Provides (ActiveRecord) built-in adapters: MySQL, PostgreSQL and SQLite3 as well as adapters for popular databases such as Oracle, SQLServer, DB2, FireBir...

A database backend that translates database interactions into no-ops. Using NullDB enables you to test your model business logic - including after_save hooks - without ever touching a real database.

Oracle "enhanced" ActiveRecord adapter contains useful additional methods for working with new and legacy Oracle databases. This adapter is superset of original ActiveRecord Oracle adapter.

An ActiveRecord ODBC adapter

Derby JDBC adapter for JRuby on Rails.

This gem includes several enhancements and customizations to the standard ActiveRecord Oracle Enhanced adapter, which is still required. Any customizations to this adapter's behaviour or additional Oracle-specific utilities should be added here.