Abstract: A computer-based system creates a data object by preparing a data structure for the data object in a database and processes the data object at different processing stages each associating a different workflow state with the data object. The system can take and store automatically a snapshot of the data object, prior to a workflow transition of the data object from a first workflow state to a second workflow state, respectively associated with the snapshot and with the data object. The system also creates a unique locating reference for the snapshot based on a unique locating reference created previously for the data object. When the unique locating reference for the data object is received, controlled access to the data object and the snapshot is provided. Based on one unique locating reference, multiple states of the data object can be easily and efficiently made available concurrently to a user.

Abstract: A computer-based system creates a data object by preparing a data structure for the data object in a database and processes the data object at different processing stages each associating a different workflow state with the data object. The system can take and store automatically a snapshot of the data object, prior to a workflow transition of the data object from a first workflow state to a second workflow state, respectively associated with the snapshot and with the data object. The system also creates a unique locating reference for the snapshot based on a unique locating reference created previously for the data object. When the unique locating reference for the data object is received, controlled access to the data object and the snapshot is provided. Based on one unique locating reference, multiple states of the data object can be easily and efficiently made available concurrently to a user.

Abstract: A computerized transaction server (1), for the conclusion of contracts between service users and service providers, comprises a user interface with several data input modules (151), having data input fields for the input of data relating to the object of the contract. Data rules and business rules, provided for the data input fields, are stored in a regulatory databank (18). The quality of inputted data values are verified by the transaction server (1), according to the provided data rules and the data values are evaluated based on the provided business rules. Various contract conclusion processes (141, 142) and/or data input modules (151) for the input of additional data are automatically selected and activated by the transaction server, depending on the result of the evaluation. For the checking and evaluation of the data values, sets of rules with differing business rules and/or data rules are selected by the transaction server (1), depending on inputted data values.