What prerequisite is necessary when a technical user needs to execute queries across tenant databases?

When a technical user needs to execute queries across tenant databases in a multitenant deployment, having a communication channel whitelist is essential. This prerequisite ensures that only authorized communication channels can access the tenant databases, thus maintaining security and data integrity across different tenants.

The communication channel whitelist consists of specific endpoints or channels that are permitted to interact with the databases. By configuring this whitelist, the system allows for controlled access, reducing the risk of unauthorized queries or transactions. This is particularly important in a multitenant architecture where data segregation and security among tenants are critical to preserving each organization’s data privacy and compliance with regulatory requirements.

In contrast, while options such as direct database connections and server authentication play important roles in database access and security, they do not specifically address the broader aspect of cross-tenant query execution in a manner that mitigates unauthorized access. Sequential data processing also does not pertain to cross-tenant queries, as it focuses more on the order of data handling rather than the management of connectivity and permissions across different databases.