doc.Products.odbc-ingres-mt The Multi-Tier ODBC Drivers for CA-Ingres consists of the generic ODBC client driver and the CA-Ingres Database agent on the server utilizing the built in database independent network layer for communication between the client and server.The OpenLink Multi-Tier Drivers for CA-Ingres are a Type A class driver developed using the OpenAPI call level interface.These drivers are currently available for Ingres II versions 1.x, 2.x and beyond. [[/images/aodbcst.gif|]] /Ingres Multi-Tier Architecture Diagram Image scaled down; Click to enlarge./ This driver is available for Windows, Linux, Unix(most flavours) Operating systems.