Database programming in WordPress

Our company’s Web site was developed using WordPress. I am just starting to learn WordPress. I developed an Access program linked with an underlying SQL DB that ideally would run within WordPress.

While Access 2013 does have a Web App. it requires SharePoint to run on the Web and I was told that SharePoint and WordPress may not coexist very well.

So assuming Access 2013 isn’t the best tool for the job, and recognizing MySQL is part of our WordPress installation, will WordPress allow me to develop my tables, table relationships, etc. as I can do within Access? Or, can an Access DB, linked with SQL be used effectively in WordPress? Our DB product will be a Web-based quoting engine that requires no human intervention.

Any guidance or recommendations would be very much appreciated. Thanks. Joel Pollet