Schema-Designs-

Schema Design with a given problem statement
Having a upper hand on datawarehouseing concept would be perfect other wise DBMS core is must!!
Concepts of small-scale and large-scale helps us to migrate from existing architecture to other db architechture.
Steps for Database model desgin:-

1. Understanding Business goals.
2. Considers all the noun in problem statement as your entity, features as attributes with some basic hand on practice
3. Small Scale db
4. Converting into scalable db model by segregating sql db and nosql db design