The Core index contains a configurable subset of the content and media items in the Core database.
You can host the Core index on:
Lucene (developer environments only)
Refer to the Sitecore compatibility table for compatible versions.
The Core index has its place in the Sitecore reference structure. It can be referenced by other roles, and it can also reference other roles.
The Core index is referenced by the following roles:
The Core index does not reference other roles.
Privacy and security
Assuming default behavior, the Core index does not handle personal data.