Columns of Table ALL_SYNONYMS
Column ID Column Name Datatype Not Null Data Default Comments
1 OWNER VARCHAR2(30 BYTE)      
2 SYNONYM_NAME VARCHAR2(30 BYTE)      
3 TABLE_OWNER VARCHAR2(30 BYTE)      
4 TABLE_NAME VARCHAR2(30 BYTE)      
5 DB_LINK VARCHAR2(128 BYTE)      

Indexes on Table ALL_SYNONYMS
Uniqueness Index Name Type Columns Partitions Partition Type Partition Columns Subpartition Type Subpartition Columns
NON-UNIQUE IDX_ALLSYNO_1 NORMAL SYNONYM_NAME <none>        
NON-UNIQUE IDX_ALLSYNO_3 NORMAL TABLE_NAME <none>        

Table ALL_SYNONYMS does not have...
Comments
Partitions
Foreign Key Constraints
Primary Key, Unique, or Check Constraints
Redaction Policies