System for the efficient transmission of partial objects in distributed data bases

摘要

The invention relates to a network having network nodes ( 1 to 5 ) and a software system distributed among all the network nodes ( 1 to 5 ), said software system having at each network node ( 1 to 5 ) a software component referred to as a distribution utility ( 12 to 14 ) for the access to the data of a distributed data base ( 31 ), and for the communication with other distribution utilities ( 12 to 14 ) of different network nodes. A software component referred to as a data manager ( 15 to 19 ) serves as a link from the data base ( 31 ) to other components and includes a callback component ( 20 to 24 ) for the access to at least one element ( 28 ) of a data object ( 29 ). With the aid of a key consisting of two parts, of which a first part is a distribution utility key ( 33 ) for the identification of a data object ( 29 ) by the distribution utility ( 12 to 14 ), and of which a second part is a data manager key ( 34 ) for the identification of at least one required element ( 28 ) of a data object ( 29 ), it is possible to access both the data object ( 29 ) and individual elements ( 28 ) of the data object ( 29 ).