GenerateUpsertString accepts a lily model and returns two string containing SQL that may be used to upsert the model.

LatestSchemaVersion returns the most recent version of the model schema.

Note this list is manually updated.

Advisory locks.

A Catalog holds a list of pre-configured storage systems and can open them when requested.

Metadata is additional information that a storage may use to annotate the data it writes.

A NullStorage ignores any requests to persist a model.

An AdvisoryLock is a lock that is managed by Postgres but is only enforced by the application.