The configuration database in the UVM is a highly versatile feature that allows the passing of objects and data to various components in the testbench. However, despite its versatility, the configuration database (uvm_config_db) can be a source of great confusion to those verification and design engineers who are trying to learn UVM. The goal of this paper is to demystify the uvm_config_db for the novice user. This paper will examine the functionality of the uvm_config_db starting with its relationship to the resource database. It will discuss how the database is implemented in the UVM library, and it will explore how to add to and retrieve from the database. In addition, practical examples will illustrate how to use the database in various scenarios.

( Paul Marriott , Vanessa Cooper )