Overview   User Data Model (UDM)  Click here to learn more about zeroCode. Here are a set of tutorials on using zeroCode and exploring issues encountered in typical web application design.   The UDM is the relationship between an HTML page and the data structure and elements that feed it. Click here for more.       DesignTips   Advanced Design Issues Click here for helpful hints on designing zeroCode-built applications.   Click here to learn more about zeroCode system elements, extensibility, SQL, FreeMarker, meta templates, etc.       Database Design   Systems Installation Do's and Don'ts of good database design in a well-designed applications world. Click here for design steps to build good applications.   Learn about zeroCode's delivery components, site processing, etc.