Databases Reference
In-Depth Information
Figure 3-5.
Validation in action
How It Works
First, a little about server-side validation. Server-side validation, as opposed to client-side validation
requires a round trip to the server. There are basically three types of server-side validation in APEX.
Item Level Validation
: Use this when your validation involves only one page item at a time.
Tabular Form Validation
: Use this to validate tabular forms (more on this in Recipe 3-2).
Page Level Validation
: Use this when your validation involves multiple page items in the form (for
example, ensuring that the start date is earlier than the end date).
The Condition Type field allows you to specify the conditions under which the validation will be applied.
For example, you might not need to check for payment if the person being discharged happens to be a
VIP patient at that hospital. You might include a checkbox in the Patient Discharge form that indicates
that the patient is a VIP member if checked. The condition configuration allows you to then create a rule
that can check for this flag, and if ticked, to skip the validation.
