High Quality Content by WIKIPEDIA articles! Raima Database Manager (or RDM) is a high performance, ACID-compliant database management system divided into three environments; Mobile, Embedded and Desktop & Server. RDM has been designed to utilize multi-core computers, networking (local or wide area), and in-memory or on-disk storage. It provides a low-level C API and a higher level SQL API. It has been ported to Windows, Linux, Unix and several real-time or embedded operating systems.