Plugin to handle data like a database inside posts/pages?

Hi,

I want to be able to add a bunch of entries in a database and then have those entries displayed inside posts/pages when they are called for… kind of like a commerce plugin that lets you display certain products on the page when certain conditions are met – but more neutral than such a plugin.

Anyone know of a versatile plugin that would let me manipulate and display data in such a way?

Thanks for any input,
JFG