Λεπτομέρειες

ΕίδοςΔημοσίευση
ΚωδικόςTR-2005-18
ΤίτλοςGraph-Based Modeling of ETL Activities with Multi-Level Transformations and Updates
ΣυγγραφέαςΆλκης Σιμιτσής, Πάνος Βασιλειάδης, Μανώλης Τερροβίτης, Σπύρος Σκιαδόπουλος
Έτος2005
Λέξεις κλειδιάETL, Data Warehousing, Modeling, Transformations
ΠερίληψηExtract-Transform-Load (ETL) workflows are data centric workflows responsible for transferring, cleaning, and loading data from their respective sources to the warehouse. In this paper, we build upon existing graph-based modeling techniques that treat ETL workflows as graphs by (a) extending the activity semantics to incorporate negation, aggregation and self-joins, (b) complementing querying semantics with insertions, deletions and updates, and (c) transforming the graph to allow zoom-in/out at multiple levels of abstraction (i.e., passing from the detailed description of the graph at the attribute level to more compact variants involving programs, relations and queries and vice-versa).
ΚατηγορίαETL
ΔημοσίευσηProceedings of the 7th International Conference on Data Warehousing and Knowledge Discovery (DaWaK '05)
Αρχείο Επισκόπηση


Επιστροφή στην αρχική σελίδα