Data mining sometimes uses Web scraping.
=== Data mining ===Data mining involves six common classes of tasks:Anomaly detection (outlier/change/deviation detection)  The identification of unusual data records, that might be interesting or data errors that require further investigation
 For a short time in 1980s, a phrase "database mining", was used, but since it was trademarked by HNC, a San Diego-based company, to pitch their Database Mining Workstation; researchers consequently turned to data mining

