Reinsurance is one of the most complex business processes in the world of insurance. Providing concise information about performance and potential of the current state of reinsurance contracts in an understandable way can significantly support decision making and guide improvement of both the process and its results. The goal of this thesis is to analyse, design and build a data warehouse model in collaboration with the Adacta company, that will be able to cover basic analytical reports for the cedant reinsurance processes, i.e. processes of insurance companies that pass the risk associated with their insurance policies to a reinsurer. Additionally, reports utilising this analytical data model will be created in PowerBI and visualised on a testing dataset.