Package appdb declares the application database, contains the SQL for database migrations and seeding.

Package dbtest contains supporting code for running tests that hit the DB.

Package delegate provides the ability to make function calls between different domain packages when an import is not possible.

Package order provides support for describing the ordering of data.

Package page provides support for query paging.

Package pubsub provides topics that can be access by the business layer.

Package sqldb provides support for access the database.

Package unitest provides support for excuting unit test logic.