Warning: file_put_contents(): Only 0 of 26 bytes written, possibly out of free disk space in /var/www/ojs.unud.ac.id_backup/lib/pkp/classes/cache/FileCache.inc.php on line 90 Qusyairi, M. 2020 Dec 14. Data Warehouse Design and Build Data Warehouse Using Ontology and Rule Base Method in Supporting Sales and Service Information. International Journal of Engineering and Emerging Technology. [Online] 5:2