No, the Excel files & spreadsheets are not database, no matter how often some people say it. You may be one of them, but that doesn't mean that you are right. The databases are something different, and the advantages in working with them are the following:
- optimization on site to ensure that its structure and content follow the rules established by Google and the other search engines. It is done once (in the beginning), but it can be done again when necessary (when the rules change or the structure and / or content of the site changes and they do not follow the rules anymore).
- the site has to grow by adding quality content, unique and targeted to your audience.
Everything has as final purpose the value for the final user.
Do you want a web page or a web application? Excellent. Do you have a web designer or a web developer to build your application from scratch or to update it every time you need? Good. Use them. What about the promotions of your product on the internet after the delivery of the site? Usually, the page is realease and that's all, the designers' and developers' job is done and it is your job to get somebody to promote your page or application and to get it well-known.