Abstract: A distributed processing apparatus 1 includes: a selection unit 12 that lists execution plans for a query related to a plurality of database apparatuses 2 and selects any of the execution plans based on data transfer time periods of the individual execution plans; a transmission unit 13 that divides the query in accordance with the selected execution plan, and transmits instructions that include divided queries obtained by dividing the query and transfer destinations of execution results of the divided queries to the corresponding database apparatuses 2; and an output unit 14 that receives the execution result of the query from the database apparatus 2, and outputs the execution result.

Abstract: A system migration support apparatus enhances reproducibility of operation of a migration source system in a migration destination system, by including a first generation unit generating first data showing information about operation of a migration source system in a form dependent on an implementation technique of the migration source system, based on materials of the migration source system; a second generation unit generating second data showing the information about the operation in a form independent of a particular implementation technique, based on the first data, and generating first correspondence information showing correspondence relationships between portions of the first data and portions of the second data; and a third generation unit identifying the portions of the first data corresponding to the portions of the second data, referring to the first correspondence information, and generating third data showing the information about the operation in a form dependent on an implementation technique