Data Policies & Dictionary for ServiceNow

Data Policies enforce data integrity rules. Dictionary controls schema and field behavior.

Architecture

Dictionary (sys_dictionary)
    ├── Field Definition
    │   ├── Type, Length, Default
    │   └── Dependent Field
    └── Dictionary Overrides (sys_dictionary_override)

Data Policy (sys_data_policy2)
    └── Data Policy Rules (sys_data_policy_rule)
        └── Condition-based field behaviors

Key Tables