Since 2013, the Dutch Migration Chain has had a chain-wide data dictionary, the Data Dictionary Migration Chain (GMK). The Migration Chain consists of the following organisations: - Central Agency for the Reception of Asylum Seekers - Correctional Institutions Agency, Ministry of Justice and Security - Repatriation and Departure Service, Ministry of Justice and Security - Directorate-General for Migration, Ministry of Justice and Security - Immigration and Naturalization Service , Ministry of Justice and Security - International Organization for Migration - Royal Netherlands Marechaussee - Ministry of Foreign Affairs - National Police - Council of State - Council for the Judiciary - Netherlands Council for Refugees - Seaport Police. ### Data dictionary Migration chain One of the principles in the basic starting architecture of the migration chain is that there is no difference of opinion about the meaning of the information that can be extracted from an integrated customer view. A uniform conceptual framework goes further than a glossary of the most important concepts: each shared data can be related to a concept in the conceptual framework; in the description of the concepts, the relations to each other are named. Chain parties have aligned their own conceptual frameworks with the uniform conceptual framework in the migration chain. The GMK is an overview of the common terminology used within the migration chain. This promotes a correct interpretation of the information exchanged within or reported on the processes of the migration chain. A correct interpretation of information prevents miscommunication, mistakes and errors. For users in the migration chain, the GMK is available on the non-public Rijksweb (gmk.vk.rijksweb.nl). In the context of openness and transparency, it has been decided to make the description of concepts and management information from the GMK accessible as open data. This means that the data via Data.overheid.nl is available and reusable for everyone. By making the data transparent, the Ministry also hopes that publications by and about work in the migration chain, such as the State of Migration, can be better explained and contextualised. ### Manual Manual for using the open datasets of the migration chain in Excel.
