Patent ID: 7908241

Claim:
A system comprising: a database system for storing data elements; a data processing system for processing data elements, the data processing system being associated to a first subscriber of a telecommunications system; the data processing system comprising; a first database configured to store records, a record containing a name data field including name information given by the first subscriber to an other subscriber of a telecommunications system, and an address data field including a subscriber address of the other subscriber, in the telecommunications system; and interface means containing output means for outputting information to the first subscriber and input means for receiving as input information from the first subscriber; and the database system comprising a server and a second database, wherein said output means are arranged to output to the first subscriber at least a part of a content of a first data element in connection with at least one selection option including one or more name data fields of the first database; said input means are arranged to receive from the first subscriber a selection of a name data field of at least one other subscriber; the data processing system is, in response to the selection of the name data field by the first subscriber, arranged to fetch from the first database a subscriber address stored in the address data field in the record of the selected name data field; and to attach the fetched subscriber address to the first data element as person-based metadata such that the fetched subscriber address and the first data element form a second data element that is processed in data transfer as one payload entity that is invisible to the data transfer protocol; the data processing system is arranged to send the second data element to the database system; the database system, is arranged to receive a fetch request for a first data element from a second subscriber accessing the database system; and to check the access right of the second subscriber to the first data element by comparing the subscriber address of the second subscriber with the subscriber address included as person-based metadata in the second data element.