There are (at least) three levels of operational performance measurements.

For improving decision making and performance measurement through "lessons learned"

The city is committed to the advancement of modern management systems and performance measurement.

New York does quite a lot of performance measurement, but it's not used to drive decisions.

Financial indicators used in performance measurement and when looking at an operating index.

Practices used by both the private and public sectors in the area of performance measurement are still evolving.

Host sites were responsible for supervision, performance measurement and member development.

One way of displaying the performance measurements is with a dashboard.

Performance measurements must be established through recognized industry, national, and/or international metrics.

This means that in a performance measurement, the tree will behave like a linked list data structure.