For all other database servers

If your application uses a non-Oracle database (for example, Microsoft SQL server) you can use the following SQL syntax to limit the number of returned rows to the DataWindow:

FROM my_table 
WHERE Table.primary_key > = bottom 
ORDER BY Table.primary_key;

"bottom" is a variable that contains the row number of the first row you want to retrieve, where rows are ordered by the primary key for the table. Before retrieving the first page of data, "bottom" should be set to a value smaller than any primary key value in the table.

Based on this SQL statement, you can implement Next and Previous buttons for the DataWindow. Their Clicked events increment or decrement the bottom variable so that its value matches the primary key value in the first row you want to retrieve then execute the above SQL statement.