Permissions and databases?

Hi,

I’m hoping to create a password-protected WordPress site to allow users to input data into a MySQL database, then be able to search and access that database.

But here’s the catch: an admin level user would be able to search/access all data, while other users would only be able to search/access their own data.

Is there a simple enough way to do this via WP? I’m not a developer, by the way, but know enough PHP to cobble things together successfully in WP templates.

Any help would be greatly appreciated! If WP is not the best approach here, any other ideas would be great.

Thanks in advance!