The main focus of the Database of Jewish-Owned Businesses in Nazi Berlin project focuses on the redesign and enhancement of a current offline version to an international audience in education and research. One important aspect of this focus, aside from rescuing data from an outdated offline platform, is to ensure that the future database should be widely accessible by being hosted online.
As a tool to overcome the parlous state of the files, the database served to collate the scattered information and render it statistically manageable. Its design was based on the premise that all Jewish businesses underwent considerable changes against the backdrop of persecution after 1933. Hence, all kind of changes, not only their names, legal form, address, owners, shareholders, and managers, of more than 50,000 companies were stored in the current state of the database enhanced by informations regarding source materials and research literature. Of these, 8,000 companies were identified as having Jewish owners. In his study, “Final Sale in Berlin. The destruction of Jewish commercial activity 1930-1945” the project coordinator Christoph Kreutzmüller estimates that his team managed to identify 60 percent of all the businesses that were Jewish-owned.
Anticipating the growing public and research interests, the full offline version of the database was made available to many research departments and memorial organisations (e.g. the New Synagogue Berlin—Centrum Judaicum Foundation, the Berlin State Archive, Yad Vashem, the Leo Baeck Institute, New York and the Wiener Library). These offline copies are hardly ever used – and become more and more outdated as information cannot be easily transferred between the database and researchers and institutions interested in sharing their sources and materials. Furthermore, the offline technology is not suitable for disseminating and cross-linking the database contents with any kind of information in the World Wide Web.
Therefore, a small excerpt of the database with reduced information on the companies identified as Jewish was published online at http://www2.hu-berlin.de/djgb/www/find. This website continues to attract intense public attention. When this abridged online database was offline due to software maintenance in early December 2018 – the author of the study received up to three complaints a day. This confirmed the initial anticipation that the data contained within the old, offline database was widely sought after, and that the move to make this data accessible online was of real value and interest to both the research community and to the general public.
The project team will carry out the development of a research tool for source materials and literature for both traditional analogue research and the digital humanities in the area of Jewish history. Based on current technological and archival standards the current offline database solution (Microsoft access database, created in 2006 for a small research team) will be migrated into an accessible network version. The new database will be open for editor teams to inject new materials as well as to enhance and connect these materials with other online databases (sources, literature, encyclopedias etc.) through linked open data technologies.
An important element of the transformation and migration of the database includes the possibility to interlink with other factual references or collection of sources. Therefore, a complete rethink of function and design will be necessary. The idea behind a reorganized database structure with SQL- and NO-SQL-technologies (Not-Only-SQL) is to open the database for any kind of materials. The core structure of the new online database will contain relevant metadata based on SQL-technologies, but by using No-SQL-Technology it will be possible to enhance the database with any new kind of materials regardless of its structure. The planned data-sharing and linking of data (Linked open data) will be supported by the same technical processes and operations like the web-interface on the REST-API, and also for text- and data-mining tools.
The new database will be opened for new editors collecting their materials and will enable the raw data to be enhanced by other relevant materials, such as images or supplementary texts. At the same time, this data will be available to different research and memorial organizations through the new web-interface. It is our plan to invite all the institutions that already have a copy of our Database (Leo Baeck Institute, Berlin State Archive, New Synagogue Berlin—Centrum Judaicum Foundation, Wiener Library and Yad Vashem to add information they have found to our database. Preliminary talks with the Berlin State Archive and the Wiener Library have shown a great interest in the new database.
A new interdisciplinary team will therefore work together to ensure that the research conducted between 2006 and 2011 will not only be saved from the almost total oblivion that would have resulted in being locked in an outdated, offline, inaccessible database, but also that this research can be actively used and expanded. New information will be added and a new presentation of the database contents will attempt to further increase the accessibility and impact of the data. The interlinkage to related projects will not only improve our understanding of this incredibly important topic of disspossession and persecution, but will also actively participate in the development of a global and digital research community – working together to learn and inform.