Beginning Oracle Application Express 5 by Doug Gault

Author:Doug Gault
Language: eng
Format: epub, pdf
Publisher: Apress, Berkeley, CA

There are four types of validations: item level, page level, and, for tabular forms, column level and row level. Item-level validations operate against a single APEX item. Page-level validations are used when multiple items are involved in validating the condition. Tabular form validations behave similarly but are done against the columns and rows of the tabular form. You use an example of each in the Help Desk application.

Item-Level Validation

Validationson a single element can have attributes specific to that element, and behavior can be customized as required by that element. The example you will implement here is a validation that checks its condition only when a specific criterion is true. The requirement is to have an end date entered whenever the status is closed. Follow these steps: 1.Edit Page 210 of the application.

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