Explain The Dw Validation Rule?

1.	Explain The Dw Validation Rule?
Answer» If the data in a column has changed, it checks for the correctness of the value (both data type and data value) in the PRIMARY buffer. Wrong data type or data value will trigger the ItemError () EVENT. If the data is CORRECT it triggers ITEM changed () event, which if it RETURNS ZERO, triggers itemfocuschanged () event. If the data in a column has changed, it checks for the correctness of the value (both data type and data value) in the primary buffer. Wrong data type or data value will trigger the ItemError () event. If the data is correct it triggers item changed () event, which if it returns ZERO, triggers itemfocuschanged () event.

Answer»

If the data in a column has changed, it checks for the correctness of the value (both data type and data value) in the PRIMARY buffer. Wrong data type or data value will trigger the ItemError () EVENT. If the data is CORRECT it triggers ITEM changed () event, which if it RETURNS ZERO, triggers itemfocuschanged () event.

If the data in a column has changed, it checks for the correctness of the value (both data type and data value) in the primary buffer. Wrong data type or data value will trigger the ItemError () event. If the data is correct it triggers item changed () event, which if it returns ZERO, triggers itemfocuschanged () event.

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