libdm0 | Data Management API runtime environment | Mehr ...
Files required by system software using the Data Management API (DMAPI). This is used to implement the interface defined in the X/Open document: Systems Management: Data Storage Management (XDSM) API dated February 1997. This interface is implemented by the libdm library.
libdm0-dev | Data Management API static libraries and headers | Mehr ...
libdm0-dev contains the libraries and header files needed to develop programs which make use of the Data Management API (DMAPI).