Data medium provision as per GDPdU

The provision of tax-relevant data from accountancy software that is over 20 years old for data media provision in the context of the digital financial inspection necessitates the new development of an individual interface. This is capable of generating sequential text files with fixed record lengths from unloaded ISAM files. On the one hand, the data is converted from Unix to DOS and, on the other, numerical data stored as binary coded decimal is unpacked into the ASCII format. Data record descriptions are generated in the XML format from COBOL record descriptions of the old system and from a document with the relations between the records. One part of the ISAM files contains data records with different lengths which do not belong together from a functional point of view. Before the transformation they must be broken down into further data stocks according to functional criteria. The interface is deployed as a standalone application which is used by the head office and the branches.