Policy Decision Point (PDP) definition in Computer Security terms:
Definition(s): Computes access decisions by evaluating the applicable DPs and MPs. One of the main functions of the PDP is to mediate or deconflict DPs according to MPs.
Source(s): NIST SP 800-162
Mechanism that examines requests to access resources, and compares them to the policy that applies to all requests for accessing that resource to determine whether specific access should be granted to the particular requester who issued the request under consideration.
Source(s): NIST SP 800-95 (OASIS: A Brief Introduction to XACML)
reference: CSRC Glossary