Definitely not.
Zoho Creator/Deluge primarily addresses the needs of a large number of people who have a requirement for a web application but do not know to build it on their own. You need not be aware of Java, JSP, PHP, JavaScript, HTML or CSS. You just need to have a clear idea about the application you want to build and how you want it to be presented. The deluge script builder will take care of converting your logic into easy and natural deluge script.
Though the applications created using zoho creator are database driven, you need not know the relational database principles. The entire database layer is abstracted and you will only speak in terms of forms and fields while scripting in Deluge. A HR manager who wants to create a recruitment application, a home maker who wants to keep track of her monthly expenses, a sales guy who wants to keep track of his leads can all code very easily using Deluge. And a techie who slogs all day creating a web app using conventional tools would be just amazed at how fast it is to do the same using Deluge.