class DevelopmentConfig(object):
    DATABASE_URI = "postgresql://action:action@localhost:5432/posts"
    DEBUG = True

class TestingConfig(object):
    DATABASE_URI = "postgresql://action:action@localhost:5432/posts-test"
    DEBUG = True

class DevelopmentConfig(object):
    DATABASE_URI = "postgresql://ubuntu:thinkful@localhost:5432/posts"
    DEBUG = True

class TestingConfig(object):
    DATABASE_URI = "postgresql://ubuntu:thinkful@localhost:5432/posts-test"
    DEBUG = True

Update database URIs for C9.
Update database URIs for C9.