HCL Informix ODBC Driver with the DMR

HCL Informix® ODBC Driver includes a Driver Manager Replacement (DMR) library. The DMR replaces the driver manager on platforms where no driver manager is available.

The following figure shows an ODBC configuration with the DMR.
Figure 1. Architecture of the driver manager replacement module
This graphic contains four horizontal rectangles. The rectangles are labeled, from left to right, "ODBC 2.x/3.x Application", "HCL Informix ODBC Driver Manager Replacement Module", "HCL Informix ODBC Driver", and "Data Source." The rectangles are connected in a single horizontal line by three arrows.

Applications that are linked directly to the ODBC Version 4.10 driver and the DMR do not require the ODBC Driver Manager.

In addition to supporting ODBC Version 4.10 features, the DMR supports compatibility between ODBC 2.x applications and Version 3.00 of the HCL Informix ODBC Driver. To be compatible with ODBC 2.x applications, the application must link to Version 3.00 of HCL Informix ODBC Driver through the DMR or through the ODBC Version 4.10 driver manager.

You cannot use the HCL Informix DMR to connect to non-Informix data sources. The DMR does not support connection pooling. The DMR does not map between Unicode and ANSI APIs.

Parent topic: Overview of HCL Informix ODBC Driver
Copyright© 2020 HCL Technologies Limited