Instruct: Classify Amazon reviews into positive or negative sentiment
Query: not recommended for the techies among you

Poorly organised, dumbed-down version of the "Oracle: Complete Reference" published by the Oracle Press in 1995. Full of typos and verbosity; mostly misses the point it's trying to make and the examples haven't always been checked either. Try "Oracle Design" or the other books by the O'Reilly Press if you are trying to use the product in a development environment.