Splunk can monitor text files, which is not likely to be the case for .accdb files.
DB Connect might work, but Access is not a supported DB. If you can find a JDBC driver for Access then give it a try on your test system.
Thanks for your response @richgalloway
Checked the below link, but haven't installed yet. Any thoughts please?
Hard to say as they don’t tell their prices and we don’t know your needs and business case! I suggest you to ask their quote for your needs and if it’s reasonable then test it with their free trial with DB Connect.