ALL_NESTED_TABLES describes the nested tables in tables accessible to the current user.
DBA_NESTED_TABLES describes all nested tables in the database.
USER_NESTED_TABLES describes nested tables owned by the current user. This view does not display the OWNER column.
| Column | Datatype | NULL | Description | 
|---|---|---|---|
| OWNER | VARCHAR2(30) | Owner of the nested table | |
| TABLE_NAME | VARCHAR2(30) | Name of the nested table | |
| TABLE_TYPE_OWNER | VARCHAR2(30) | Owner of the type of which the nested table was created | |
| TABLE_TYPE_NAME | VARCHAR2(30) | Name of the type of the nested table | |
| PARENT_TABLE_NAME | VARCHAR2(30) | Name of the parent table containing the nested table | |
| PARENT_TABLE_COLUMN | VARCHAR2(4000) | Column name of the parent table that corresponds to the nested table | |
| STORAGE_SPEC | VARCHAR2(30) | Indicates whether storage for the nested table is USER_SPECIFIEDorDEFAULT | |
| RETURN_TYPE | VARCHAR2(20) | Return type of the varray column ( LOCATOR) or (VALUE) | |
| ELEMENT_SUBSTITUTABLE | VARCHAR2(25) | Indicates whether the nested table element is substitutable ( Y) or not (N) |