Add Validation logic
We need Validation logic for both our Playlist tables, Header and Line.
Playlist Header Validations
The Playlist Header data fields are:
- No.: The ID number for this instance of a radio show; user defined
- Radio Show No.: Chosen from the Radio Show table
- Description: Displayed via a FlowField from the Radio Show table
- Posting Date: This show's scheduled broadcast date
- Start Time: This show's scheduled broadcast start time
- End Time: This show's scheduled broadcast end time
- Duration: The length of the show; displayed via a FlowField from the Radio Show table
- PSAs Required and Ads Required: How many PSAs and Ads are planned during the show; copied from the Radio Show table, but editable by the user
- News Required, Sports Required, and Weather Required: Whether or not each of these program segments are required during the show; copied from the Radio Show table, but editable by the user
When the user chooses the Radio Show to be scheduled, we want...
