This table is created to store batches for the Notification Worksheet form. The user may have
different batches on the Notification Worksheet for working with different notifications. The Logging Period is the period for storing sent notification lines in the Notification Log Entry table.
When the user tries to delete a batch, the program asks the user if he or she wants to delete all notification log entries linked with this Batch. Notification Worksheet Lines linked to a batch are deleted when the user deletes the batch.