California State Senate Bill 272 (SB 272) requires local governments to publish an inventory of their data systems that are both a system of record and that contain information about the public. This dataset is the SB 272 inventory for the County of San Mateo. More information on SB 272 can be found in the text of the law: https://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201520160SB272