如何创建页面来编辑数据库

I'm trying to build a website that provides a login for users. Once these users login, they will be able to perform functions that will likely query a database. At some point I will need to add/modify/delete contents in the database and I'm wondering how I would be able create a page on the website that I'd only have access to. Ideally I wouldn't like to have a page on my website that allows me to edit information in my database because it could be susceptible to attacks. So how would the experts from stackoverflow create a page to edit information in their database? I'm trying to build a website that provides a l