Business management analysis; business consultancy; marketing research; marketing analysis services; providing information concerning commercial sales; business efficiency expert services; business data analysis; business appraisal consultancy; provision of information concerning commercial sales by e-commerce; arranging contracts, for others, for the buying and selling of goods on e-commerce; filing of documents or magnetic tapes; management of computerised files; computerised database management; compilation of information into computer databases; systemization of information into computer databases; consultation about the systemization of information into computer databases; customer service management for others in the field of operation of the computer systems; Business consultancy services in the field of computer database management