How can authorized users query data in ACJIS?

Authorized users can query data in the Arizona Criminal Justice Information System (ACJIS) through a secure online portal because this method provides the necessary security and access controls to protect sensitive information. The secure online portal is specifically designed for authorized personnel to gain access to criminal justice data while ensuring compliance with privacy regulations and data security protocols.

This method allows for real-time access to data, which is crucial for timely decision-making in law enforcement and judicial processes. Accessing ACJIS data via an online portal also typically includes authentication measures that verify the identity of the user, thereby limiting access to only those individuals who have proper authorization.

The other options, while they could involve some sort of data request or access, do not align with the secure and controlled nature required for handling sensitive criminal justice information. Text messaging services, public terminals, and formal written requests do not provide the level of security and efficiency that is mandated for accessing ACJIS databases.