Abstract: There is disclosed a data linking system which efficiently links data for improved performance and quality of the system. A data storage device stores data. A transmitter-side storage information management device manages storage information concerning control of storage of the data in the data storage device. A transmitter-side storage information interface device transmits and receives the storage information for linkage with a receiver side. A data writing device writes the data into the data storage device based on the storage information. A receiver-side storage information management device manages the storage information concerning control of storage of the data in the data storage device. A receiver-side storage information interface device transmits and receives the storage information for linkage with the transmitter side. A data reading device reads the data from the data storage device based on the storage information.

Abstract: Historical log data for a plurality of databases are classified for the individual databases. Alternatively, the historical log data associated with the database and user log data are classified. The classified log data are stored in a plurality of volatile buffers. When the nonvolatile buffers are full, the contents of the nonvolatile buffers are temporarily written into the historical log files, following which the classified log data are stored in the nonvolatile buffers.

Abstract: Samarium cobalt magnetic materials for permanent magnets comprising, by atomic ratio relative to the samarium content, samarium of 1, cobalt of 4.0-5.2 and at least one addition selected from silicon up to 5.8 wt.% or 0.82 by atomic ratio to the samarium, germanium up to 8.5 wt.% or 0.57 by atomic ratio to the samarium and aluminum up to 4.75 wt.% or 0.82 by atomic ratio to the samarium, and having increased intrinsic coercive force and decreased irreversible magnetic induction loss with temperature. In the case wherein the total amount of the aforesaid addition or additions is limited, by atomic ratio to the samarium, to up to 0.25, the samarium cobalt magnetic materials may provide sintered permanent magnets having a reduced irreversible magnetic induction loss with temperature, without decreased residual magnetic flux density. When the total amount of the aforesaid addition is restricted, by atomic ratio to samarium, to up to 0.