User Permissions Summary
ServiceNow provides several levels of security before an end user has the capability to perform CRUD operations on a table
User authentication / login: Users, groups and roles
Application and modules access: Controlled by roles configure at the application and module level
Database Access: Access to tables and their records and fields are controlled via globally defined system properties as wella s table and field level access controls. If a row level rule and a field level rule are in conflic, both rules must be true before an operation is allowed.
There are three security modules typically used by the system administrator:
System properties > security
System Security > Access Control ( ACL )
System Secuity > high security Settings