• analytic tools (OLAP, On-Line Analytical Processing) – they let users access, analyse and model business problems and share information that is stored in data warehouses;
• data mining tools – they enable their users to discover various patterns, generalisations, regularities and rules in data resources;
• tools for reporting and ad hoc inquiring – they allow for creating and utilising different synthetic reports; and
• presentation layer – applications including graphic and multimedia interfaces whose task is to provide users with information in a comfortable and accessible form.