42 Writing of computer programs; design of software; computer programming; database design and development; development of systems for the processing of data; evaluation of performance of data-processing against bench-mark references; preparation of computer programs for data processing; maintenance of data bases; development of data bases; computer programming; computer programming and software design; computer programming and maintenance of computer programs; electronic data backup services; creation, updating and adapting of computer programs; updating and maintenance of computer software and programs; computer programming for the analysis of data; analysis of technical data; IT services.