The task of a designer ETL process involves: (1) analyzing existing data sources to find the semantics hidden in them and (2) design workflow that extracts data from sources, repair its inconsistencies, transforms it into a desired format, and finally inserted into the data warehouse. In order to facilitate this task, different techniques have been developed, two categories that stand out are: (a) inspired flow diagrams and process and (b) those based on the paradigm of object-oriented programming (OOP) and diagrams in UML. This article presents a couple of alternatives found in the literature and illustrates the technique used in the project Development of a business intelligence solution to support decision making in the Learning Circles Project, explaining why of their choice and how it was used Key Word — Business Intelligence, Data Warehouse, Data Staging Area, ETL Process.