SQL

Page numbers are for draft copy at present; they will be replaced with correct numbers when final book is formatted. Chapter numbers are correct and will not change now.

SQL is the standard query language used in relational databases. Within AI yoummay need touse it to access data. Also, you may want to offer alterative wasy for user to access data where the AI system generates SQL from more informally stated user queries, as seen in Query-by-Browsing.

Used on Chap. 18: page 439