| 4.7 User-defined types |
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| A user-defined type is a schema object, identified by a <user-defined type name>. |
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| A user-defined type is described by a user-defined type descriptor. A user-defined type descriptor contains: |
| - The name of the user-defined type (<user-defined type name> ). This is the type designator of that type, used in type precedence lists (see Subclause 9.5, "Type precedence list determination"). |
| - An indication of whether the user-defined type is a structured type or a distinct type. |
| - The ordering form for the user-defined type (EQUALS , FULL , or NONE ). |
| - The ordering category for the user-defined type (RELATIVE , MAP , or STATE ). |
