Computer network system for building, synchronising and/or operating a second database from/with a first database, and procedures for it

Computer network system according to the preceding claim, wherein

• a data container with a control table and a data table is provided, and is used to simulate a transaction bracket from the context of the first database in the context of the second database, and errored/missing records from the data comparison are written to this container.

Computer-supported method for building and/or synchronising a second database (DB2) from/with a first database (DB1), accesses by work units (UOW) being carried out at least on the first database (DB1) from at least one application workstation, to generate, change or delete contents of the database (DB1), with guiding and maintaining the first database (DB1) with at least one first server (S1), which is connected to at least one application workstation, guiding and maintaining the second database (DB2) with at least one second server (S2), providing at least one data connection which connects the two servers (S1, S2), providing at least one software program module, to carry out a comparison between the first and second databases (DB1, DB2), to obtain a statement for synchronisation and about the equality of the information content of the two databases, starting from the data comparison, an error log file about the errored and/or missing records being produced, and an error detection and processing function correcting the errored and/or missing records.