@INPROCEEDINGS{dawak2005, AUTHOR = "Simitsis, A. and Vassiliadis, P. and Terrovitis M. and Skiadopoulos, S.", TITLE = "Graph-Based Modeling of ETL Activities with Multi-Level Transformations and Updates", BOOKTITLE = "Proceedings of the 7th International Conference on Data Warehousing and Knowledge Discovery (DaWaK 2005)", address = {Copenhagen, Denmark}, month = {August 22 - 26}, YEAR = "2005", note = {To appear}. }