Reference identifiers

You can use simple, qualified, remote, or qualified and remote names to reference identifiers.

If an identifier is declared in a named PL unit, you can (sometimes must) use its qualified name to reference it. The syntax is as follows:

unit_name.simple_identifier_name

For example, if the program unit ob declares the identifier c, you can use the qualified name ob.c to reference it. The unit name can also (sometimes must) be qualified. If the identifier is not visible, you must qualify it (see Scope and visibility of identifiers).

If the identifier is declared in a remote database, you must use its remote name to reference it. The syntax is as follows:

simple_identifier_name@link_to_remote_database

If the identifier is declared in a remote database, you must use its qualified remote name to reference it. The syntax is as follows:

unit_name.simple_identifier_name@link_to_remote_database