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What You Need to Know
This book is about understanding and developing application logic
that brings databases and the Web together. We introduce database
systems over the course of the book, but our discussions
don't replace a book or class dedicated to
relational database theory, or a book about a specific relational
database system such as MySQL. Likewise, we assume
you're already familiar with the Web. We
don't delve deeply into the three key web protocols,
HTML, HTTP, and TCP/IP.You don't need to know how to program to use this
book, but you do need to understand basic HTML. Our introduction to
PHP doesn't assume you are familiar with web
scripting or are a programmer, but we do assume you understand the
basic HTML constructs and are familiar with the popular web browsers.
If you can use a text editor to author an HTML document that contains
a form and a table, you have sufficient HTML skills to use this book.
It's the principles of structure in the markup
process that are important, not the attractiveness or usability of
the presentation in the web browser.You don't need a detailed understanding of
relational databases to use this book, but a working knowledge is
helpful. We present the relational database theory needed for
developing simple applications, and we cover many other basic
concepts, including how to tell when a database is the method of
choice to store data, the database query language SQL, and a case
study that models system requirements and converts the model to a
database design. This book isn't a substitute for
the many good resources on database theory. However,
it's enough to begin developing the underlying
databases for many web database applications.We briefly introduce web servers and networking in Chapter 1 and provide additional material in Appendix B. Both web servers and networking are
important to a web database application but aren't
the focus of this book. We present enough information to set up a web
server and to understand how it fits in the architecture of a web
database application. For many applications, this is sufficient.
Likewise, we present sufficient detail so that you will understand
what networking and network protocol issues impact web database
application design.
