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Guardian
User Guide
Information and resources about the main features of Guardian, and the tasks that you can do from the user interface (UI).
Assertions
Assertions
The Assertions page shows all the assertions and lets you configure them.
Assertion operators

Guardian
- Introduction
  An overview of Guardian.
- Installation Guide
  Information and resources on how to install Guardian, and the different options and settings that are available.
- Administrator Guide
  Information and resources about the Administration section of Guardian, and the tasks that you can do in this part of the software.
- User Guide
  Information and resources about the main features of Guardian, and the tasks that you can do from the user interface (UI).
  - Sensors
  - Alerts
  - Assets
  - Queries
  - Smart Polling
  - Arc
  - Network
  - Process
  - Reports
  - Assertions
    - Assertions
      The Assertions page shows all the assertions and lets you configure them.
      - Assertion operators
      - Save an assertion
        You can save assertions to have them continuously executed in the system.
      - Edit an assertion
        This lets you edit the details for an existing assertion.
      - Configure an assertion
        This lets you configure the execution interval of the assertions, in seconds.
      - Configure an assertion on links
        This lets you configure the scope of the assertion for the related links.
      - Configure an assertion on variables
        This lets you configure the scope of the assertion for the related variables.
  - Time machine
  - Vulnerabilities
  - Administration
  - Personal settings
- Maintenance Guide
  Information about the maintenance tasks of Guardian, to help you administer and maintain the solution in a production environment.
- Print format documentation
  A list of all the print-format documentation that is available for Guardian.

Assertion operators

Table 1. Assertion operators
Operator	Description
`assert_all <field> <op> <value>`	The assertion is satisfied when each element in the query result set matches the given condition.
`assert_any <field> <op> <value>`	The assertion is satisfied when at least one element in the query result set matches the given condition.
`assert_empty`	The assertion is satisfied when the query returns an empty result set.
`assert_not_empty`	The assertion is satisfied when the query returns a non-empty result set.