Day 1, Session 2: Describes where database content is acquired and how it is standardized. Slides available for download on our website (https://tinyurl.com/2019IEDBslides). Timestamps: 00:00 - About the actual data 08:39 - Data structure; leveraging ontologies & external resources 15:25 - Q & A Event Background: Our team holds an annual user workshop (typically in October/November) to which we invite both those new to the IEDB as well as experienced users wanting to better understand and utilize this resource. The workshop is a great opportunity to learn about all the features of the IEDB database and tools, and to get hands-on individual support on how it can answer your research questions. For more information, contact us at [email protected] or visit the informational webpage (http://workshop.iedb.org/). This event was held November 7-8, 2019 at the National Institute of Allergy and Infectious Diseases in Rockville, Maryland, USA.