Cross-database references

You can reference objects stored in table columns in one database from another database.

For example, assume the following configuration:

In these examples, the current database is db1. You can invoke a join or a method across databases. For example:

In these examples, instance values are not transferred. Fields and methods of an instance contained in db2 are merely referenced by a routine in db1. Thus, for across-database joins and method invocations: