For a dynamic column, the column property Derived displays the formula name of the translation instruction that you use to create the column. For example, Figure 4-6 shows the column properties for a dynamic column, [TotalInStock]. It was created using the translation instruction, Expression. The Derived property displays Expression.
BIRT Analytics uses the term permanent column to describe a column that contains data values. You typically load the data values in a permanent column from an external database. You can transform a dynamic column to a permanent column using the transformation instruction, MAKEPERMANENT. For more information about transformations, see Transforming data.
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Figure 4-6
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