TypeDefinition :: isView - Does type definition define a view
The function returns true, when the type definition refers to view definition. The function can be called in order to check, whether the data type is a view before calling functions requesting view definitions.
When the type definition does not refer to a view definition, the function returns false. When calling the function with an invalid type definition, the function throws an exception.
Return value: Success ( bool )
The value is true when the function was executed successfully. Otherwise the value is set to false.