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. 2014 Mar 28;2014:bau027. doi: 10.1093/database/bau027

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© The Author(s) 2014. Published by Oxford University Press.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 4. — The basic components, their connectivity and the security levels of the EGDMS. Embedded JavaDB is the default DBMS and resides in the level one (L1) security container. The database is configured in non-network accessible mode and the users cannot directly interact with the database. The application server is in level two (L2) security and communicates with L1 using the JDBC API and maintains a connection pool for the applications to access. The application server should be started by the same process as the database server and requires a password to connect to the database server. The application server limits access by requesting a user name and a password. It also manages user roles (edit, search only etc.). The level three (L3) security is currently not implemented by the EGDMS, and is part of the server hosting it and represents a system firewall. The web-services and the web interface are accessible from the open ports of the host server. The egenv tool with a web-service client resides outside the security barriers and requires authentication to access the resources.