This guide explains how PublishPress Series data is stored in the WordPress database. Let's take a look at a site that has three series.
You will find these series stored in the wp_terms table in your site's database. Series uses the default WordPress taxonomy system to organize content. If you are using the Series Groups feature, you will the groups are all stored in this table.
You will find more information about each series stored in the wp_term_taxonomy table.
When you are editing a post and choosing a series, you are looking at a taxonomy metabox:
