Refactor ORM classes to allow postgres and snowflake to be optional dependencies #372
Description
Feature description
Currently the classes in orm.py directly reference classes from both the postgres and snowflake sqlalchemy libraries. This is not ideal since it requires both those libraries to be installed and present at runtime even though only one is required.
Use case
Allows the installation of only the libraries that are actually needed at runtime.
Acceptance Criteria
AnyVar can run and unit tests can pass with only the postgres or snowflake dependencies installed.
Proposed solution
No response
Alternatives considered
No response
Implementation details
No response
Potential Impact
No response
Additional context
No response
Contribution
None