Library to define Tcl commands which manipulate C++ class and structure objects in manners similar to the way Tk manages widgets. Objects can then be manipulated from either C++ or Tcl. Based on the original TclObjectCommand
pgdiff is a utility which compares the table definitions of two databases, and returns the differences as PostgreSQL commands which will transform the structure of the first database to be identical to that of the second (c.f. diff and patch).