LDM Integration and Development Guide

http://www.cadfamily.com/a/CAD_CAID/Laker/LDM-Integration-and-Development-Guide_3765.html

LDM interface provides a set of TCL commands for Data Management. This
TCL command set will manage users' design data with miscellaneous DM tools.
For example,
• To check out or check in the specified files with the specified options.
• To cancel checked out locking on the specified files.
• To delete the specified files and directories from the DM tool.
• To query checked out files and list information of the specified object, and
so on.
These TCL commands defined in LDM Interface are just declared with
procedure names and their specific arguments; that is, they have not implemented
yet. Vendors should provide their shared libraries, or TCL scripts, which contain
all implementations for the set of TCL commands.
There are two ways to achieve the implementation:
1. To implement with shared libraries (from C/C++ codes), you have to define
a function for each TCL command (by function TCL_CreateCommand()  with
the dedicated TCL interpreter in Laker).