I'm the "data manager" for a small data-heavy business. What's a more official name for my role, and how can I find specific educational resources?

I'm in charge of the data for a small business. We have a large and growing body of data (customers, orders, suppliers, products, business rules, pricing structures, etc.), and my primary responsibility is to impose and maintain order over the chaos. Although I wear many hats as the resident nerd, my core job duty is to manage our ever-evolving data. To accomplish this, I spend most of day in MySQL, Excel, and Access.

Speaking both broadly and specifically, what is what I'm doing called? Is this rudimentary data quality assurance? Or data quality control? Or data integrity? Or information governance? Database management? Database administration?

I want to institute standards that are as robust as possible in the small business environment, and I'd like to pursue professional educational resources. But the vast majority of generic data/information resources I find are geared towards "big data", which is not my domain, and I'm struggling to find resources that specifically apply to my role when I'm not even sure what it's called.