Methods and systems for managing and updating information relating to economic entities using sets of unique identifiers. A universe database contains record entries. Each of the record entries is associated with a unique universe identifier. A customer database contains customer record entries. Each customer record entry is associated with a unique customer identifier. A conversion table provides a mapping between the unique universe identifiers and the unique customer identifiers. The information contained in the customer database is updated using the unique universe identifiers, unique customer identifiers and the conversion table. The unique universe identifiers and the unique customer identifiers are stable over a period of time.