- database contains a module that records and manages the status of the files for each level, tracks the history of the previous execution of the system.
- step contains the base components for defining the required implementation to correctly run each step. The configuration XML related files are also available in this folder
- downloader_transformer includes basic examples of Downloader and Transformer classes and also specific implementation for different data sources.
- cleaner contains the cleaner module's source codes
- mapper contains the mapper module's source codes