It is pointed out that even though Land Administration Domain Model (LADM) standards offers a conceptual scheme defining the legal and geometrical components of real estate, it is important to be compatible with other databases (e.g. with land cover data, archive data, land valuation data and taxation data) that may be related to the model. In the model, the archive data model, which is defined as one of the external data structures, provides a class structure in which the information and documents necessary for land registry and cadastral transactions are represented. According to this class structure, necessary information and documents are kept in archive. Thanks to this structure which enables follow-up of transactions, similar transactions are prevented from being repeated.