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This article presents an approach for managing and comparing data, concerning some main food products in Bulgaria. The source for the search of these product categories (bakery products, milk and milk products, fish and fish products and etc.) is the created relational database. The extracted data for the selected category have been grouped, compared and processed. The obtained results enable the user to present relevant conclusions for the examined time interval. This approach is applied to the data on bread and ...

Sources that contain data about tourism in Bulgaria are both structured and unstructured. Information from these xls and pdf files is organised in a created relational database. The database stores time series on tourism flow (trips of Bulgarian residents abroad and foreign tourists to Bulgaria), expenditure of outbound tourists, revenues from international tourism and employment in tourism. This article studies time series on trips of Bulgarian residents abroad (outbound tourists) by country of destination and by...