Convert Logical Data Model to Physical Data Model. Sunday, 10 January 2010. Handle SuperTypes and SubTypes while converting LDM to PDM. Transition from Logical Data Model to Physical data Model? Super Types and Subtypes. You have a Super Type entity as Account and two subtype entities as Checking and Saving Account. This is probably the most common choice.

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LDMud is a virtual machine, a telnet server and a compiler for the LPC language. It is a direct descendent of the original LPMud gamedriver. LDMud is licensed as open source but may not be used for monetary gain. All new contributions are published under the terms of the 2-clause BSD license. Is a fork of MudOS which is a fork of LPMud 3. Is a reimplementation from scratch of LPMud released under an open source license allowing commercial use.