The catalog pg_conversion describes the
   available encoding conversion procedures.  See
   CREATE CONVERSION
   for more information.
  
Table 43-14. pg_conversion Columns
| Name | Type | References | Description | 
|---|
| conname | name |  | Conversion name (unique within a namespace) | 
| connamespace | oid | pg_namespace.oid | The OID of the namespace that contains this conversion | 
| conowner | oid | pg_authid.oid | Owner of the conversion | 
| conforencoding | int4 |  | Source encoding ID | 
| contoencoding | int4 |  | Destination encoding ID | 
| conproc | regproc | pg_proc.oid | Conversion procedure | 
| condefault | bool |  | True if this is the default conversion |