You are going to have to be a little more specific on your question. Do you want to create a database using a program like Access, or do you want to develop your own database system. Also, it will help to know why you need the database, what platform you need it for, etc...

Using Access to create a database is easy.
Grab a book on the subject. Read heavily into the tables and queries sections. For what you want, the rest of the book would probably be invalid. (You might also read the section on multiple users a.k.a. record locking and the sections on security.)

The real work, is writing the java-script,vbscript,ASP SQL Queries, etc... against the database. This is where you will spend most of your time.

One item to consider: How many users do you intend to have trying to access this database? More than 10 at once, you probably want to look into something like SQL server(latest version.)