This document discusses various ways to connect to Ingres databases from client applications. It describes connecting locally or remotely from an Ingres client, through ODBC, JDBC, or data access servers. Gateways are also covered, which allow Ingres databases to connect to non-Ingres databases locally or remotely. Finally, Ingres Star is summarized as providing a way to create a single federated database that connects to both local Ingres and remote non-Ingres data sources.