BIRT Analytics engineering tools support creating new fields that you can include in your data analysis. To better quantify data, you can create fields that summarize, rename, and define expressions for existing fields in the database. You also can create ranges, groups, parameters, and ranks based on your existing data values. This section describes how to use the following engineering tools: Aggregates, Decodes, Expressions, Numeric Ranges, Quantile, Parametric, and Ranking.