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A. Frank:
"Sharing Geographic Data: How to Update Distributed or Replicated Data";
Keynote Lecture: Real Corp 2014, Wien; 2014-05-21 - 2014-05-23; in: "Proceedings REAL CORP 2014 Tagungsband", M. Schrenk, V. Popovich, P. Zeile, P. Elisei (ed.); Verein CORP, (2014), ISBN: 978-3-9503110-7-5; 959 - 966.

Geographic data is expensive to collect and maintain and sharing data is crucial for its effective use in urban planning at all levels. For a few hardly ever changing themes the simple distribution of copies of data is feasible, but for other data, access to "live" data and updating, sometimes even distributed updating, of the data is necessary.
The organization of sharing data can be separated into three sets of issues: (1) Interpretation: how to understand the data, (2) Authorization: is a user permitted to use the data, and (3) Access: how to achieve effective and non-disturbing use and updating of data by several users? Solutions must take threats into account: hackers may try to steal or disturb the use of data, and the revelations of Snowden's documents only emphasize the danger of others reading data not intended for their eyes.
Effective sharing geographic data without conflicts requires integrating results from different areas of computer science research, including at least: cryptography, computer security, database management, and computer networking.

Geographic data is expensive to collect and maintain and sharing data is crucial for its effective use in urban planning at all levels. For a few hardly ever changing themes the simple distribution of copies of data is feasible, but for other data, access to "live" data and updating, sometimes even distributed updating, of the data is necessary.
The organization of sharing data can be separated into three sets of issues: (1) Interpretation: how to understand the data, (2) Authorization: is a user permitted to use the data, and (3) Access: how to achieve effective and non-disturbing use and updating of data by several users? Solutions must take threats into account: hackers may try to steal or disturb the use of data, and the revelations of Snowden's documents only emphasize the danger of others reading data not intended for their eyes.
Effective sharing geographic data without conflicts requires integrating results from different areas of computer science research, including at least: cryptography, computer security, database management, and computer networking.

Geographic Data, Update, Distributed Data

http://publik.tuwien.ac.at/files/PubDat_229137.pdf