PHP Advanced for the World Wide Web: Visual QuickPro Guide

SQL

SQL, or Structured Query Language, defines the syntax for how questions should be asked of a database. SQL, like HTML and XML, is a regulated standard, which means that it should work the same way from one RDBMS to another. However, just as Web browsers support HTML differently, some database applications will support SQL that others might have problems with. Ultimately, your best bet is to check with the manual of the particular application you are using.

Now for a list (Table B.1) and a brief discussion about the standard SQL commands and operators.

Table B.1. These eight terms will do most of the work in any database application.

SQL Terminology
Term	Usage
ALTER	Change the format of a table
CREATE	Create a table or database
DELETE	Delete ...