The Central Subsystem of Contracts of the Public Procurement Office shall collect data on public procurement contracts and the countries participating therein. The package consists of two separate tables on the nature of public procurement and the countries involved. Both tables are combined by document identifier columns. Although the columns in the contract table have been kept as close as possible to the original ones at the institution's request, the columns in the country table have been renamed a more user friendly language in order to avoid confusion in the use of the original names.