disconnectAndClear

Disconnect and clear the database.

Clearing the database is useful when a user logs out, to ensure another user logging in later would not see previous data.

The database can still be queried after this is called, but the tables would be empty.

To preserve data in local-only tables, set clearLocal to false.

A "soft" clear deletes publicly visible tables, but keeps internal copies of data synced in the database. This usually means that if the same user logs out and back in again, the first sync is very fast because all internal data is still available. When a different user logs in, no old data would be visible at any point. Using soft deletes is recommended where it's not a security issue that old data could be reconstructible from the database.