Abstract: A plurality of signal generators and a probe are used to identify, locate and trace a large number of wires in a multiple wire electrical system. Each wire to be traced is electronically marked with a signal generated by a signal generator coupled to the wire in which the signal is unique among a plurality of signal generators. Generated signals are uniquely distinguishable based upon their unique physical characteristics, inclusion of a unique identifier and/or inclusion of a unique voice message. Unique voice messages can be dynamically recorded by the user or synthetically generated. A non-contact signal receiver, or probe, detects and traces the signals emitted from the electronically marked wires. Based upon the unique characteristics of a generated signal or upon a unique identifier within the signal, the signal is identified by the probe and the wire is located.

Abstract: A computer system that incorporates an SQL type relational database is adapted to enterprises in which human performance is to be managed. There is a single table that contains linking information for multiple entity relationships among a plurality of information entities. Programs that cooperate with the database kernel include an entity relation manager for modifying the linker table to dynamically define entity relationships among the information entities; a hierarchal structure manager for dynamically defining hierarchal relationships among objects in the information entities; a load/unload utility, for changing information between a human-readable format and another format having a syntax acceptable to the database kernel; and an editor which provides an environment that enables a human operator to conveniently interact with the relational database.