17. A configuration management database system, comprising: a configuration management database server; a configuration management database, coupled to the configuration management database server; a reconciliation engine, coupled to the configuration management database server, and configured to match a plurality of configuration items provided to the configuration management database system from a plurality of source datasets with configuration items contained in the configuration management database using identification rules, the identification rules being without automatically modifiable acceptance criteria; and a statistical rules engine, coupled to the configuration management database server and configured to apply a statistical rule to match a first configuration item of the plurality of configuration items with a second configuration item contained in the configuration management database, the matching being successful when a threshold value for the statistical rule exceeds a default acceptance value after the rule has been successfully applied, the threshold value being automatically modified responsive to application outcomes of the rule, the application of the rule occurring when the first configuration item was not matched with any configuration items contained in the configuration management database using the identification rules.
21. The system of claim 17 , wherein the configuration management database server is configured to discover configuration items provided by the plurality of source datasets.