!!! Overview
[{$pagename}] ([NGAC]) standard for [Access Control]The [NGAC] [Access Control Model] comprises a set of [Relationship] and [functions] following an [Attribute Based Access Control] [model|Access Control Model].

Types of objects: 
* [resources] objects
* [data elements|Attribute Values] 
* [Relationships]
used to express [Access Control Policies|Access Control Policy].

Types of operations: 
* [Resource Actions] (e.g., read, write)
* [Policy Administration Point] operations for configuring [data elements|Attribute Values] and [Relationships].

Functions for: 
* trapping and enforcing policy on access requests
* computing decisions to accommodate or reject those requests based on the current state of the data elements and relations
* and automatically altering access state when specified events occur. [Policy Machine|https://www.nist.gov/topics/identity-access-management/policy-machine-and-next-generation-access-control]

!! More Information
There might be more information for this subject on one of the following:
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* [#1] - [Exploring the Next Generation of Access Control Methodologies|https://www.nist.gov/publications/exploring-next-generation-access-control-methodologies|target='_blank'] - based on information obtained 2018-07-09