CODE EXAMPLE FOR SQL

oracle synonym

-- Can be a table, package, procedure...
CREATE OR REPLACE SYNONYM syn_name FOR my_schema.my_table;      
CREATE OR REPLACE PUBLIC SYNONYM syn_name FOR my_schema.my_table;

-- Through a dblink:
CREATE OR REPLACE SYNONYM syn_name FOR my_schema.my_table@my_dblink;

SELECT * FROM DBA_SYNONYMS WHERE SYNONYM_NAME = 'synonym_name';