The number of record you want have in the result recordset
The recordset you want filter
You can setup a numeric field to weighting such that they would appear more frquently in the "random" selections for the page.
The value must be unique in the recordset.
The value of this field must be numeric and cannot be null.
Unique column key:
select the recordset field is a key column (usually the record ID column) to identify the record.
This server behavior is required to create e repeat region when you apply the random recordset to one of your recordset, because when the random recordset is apply to a recordset the default dreamweaver repeat region will not recognize the recordset.
Only for Php My-Sql 5.0 or more