Restricting access to external schemas from within a database level container by whitelisting allowed schemas

摘要

An external database schema permitted to be accessed from a container using a database synonym is determined. A logical schema representing the external database schema is defined. A synonym for the container is defined using the logical schema and an object associated with the external database schema. The logical schema and synonym is deployed to the container using a logical schema plugin. The container is configured to disable the logical schema plugin and to only allow references to the defined logical schemas.