index attribute
Defines which column contains the primary keys.
Content Type
unsignedInt
Parent
Remarks
The column containing the primary keys must be of type “String”. Once a row is created, the primary key cannot be changed.
Examples
<ArrayOptions index="0">
<ColumnOption idx="0" pid="1001" type="custom"/>
<ColumnOption idx="1" pid="1002" type="custom"/>
<ColumnOption idx="2" pid="1003" type="custom"/>
</ArrayOptions>