Abstract: Provided is a semiconductor device with higher reliability and longer life which can suppress an increase in production costs. A semiconductor device includes: a semiconductor element; a top electrode on an upper surface of the semiconductor element; and a conductive metal plate containing copper as a main component and solid-state diffusion bonded to the top electrode of the semiconductor element.

Abstract: In a database system that connects a plurality of user database apparatus to a host database apparatus, the database system judges whether a data record stored in each user database satisfies a condition for being registered in the host database, and stores the data record if it satisfies the condition. The renewal and registration processing is performed for all data records of all user databases to register all data records that satisfies the registration condition. The data records registered in the host database are deleted from user databases.The database system can be applied to a system consists having a shared dictionary and user dictionaries such as a Japanese language word processor, English language word processor, and a mechanical translator.