Abstract: The present invention provides an imide derivative represented by the following formula (1): wherein R1 is substituted by a substituent such as an isothiazolyl group, Q is substituted by a substituent such as a thiophenyl group, and A is substituted by a substituent such as a pyrazolyl group, and an agricultural and horticultural fungicide offering an excellent fungicidal effect in agricultural and horticultural situations, which is characterized by containing the imide derivative as an active ingredient.

Abstract: For use in a computer system, a data recovery system comprises an information producing unit for producing block-up information for data blocks which must be recovered to before images after occurrence of a system failure. Before such data blocks are recovered, other data blocks are either subjected to a transaction processing program or stored in a data file without waiting completion of the data recovery. The data blocks for which the block-up information is produced, are either subjected to the transaction processing program or stored in the data file after a block-up releasing unit deletes the block-up information upon completion of the data recovery. The data recovery system is operable even upon occurrence of an additional system failure during progress of the data recovery.