Cite
HARVARD Citation
Ries, S. (2011) OCA Oracle Database 11g. : SQL fundamentals 1: a real-world certification guide : ace the 1Z0-051 SQL fundamentals 1 exam, and become a successful DBA by learning how SQL concepts work in the real world. [Online]. Birmingham : Packt Publishing Limited. Available from: http://access.bl.uk/ark:/81055/vdc_100035562612.0x000001