Describe how documents are analogous to rows in relational databases.

2. Describe how collections are analogous to tables in relational databases.

3. Define a schema.

4. Why are document databases considered schemaless?

5. Why are document databases considered polymorphic?

6. How does vertical partitioning differ from horizontal partitioning, or sharding?

7. What is a shard key?

8. What is the purpose of the partitioning algorithm in sharding?

9. What is normalization?

10. Why would you want to denormalize collections in a document database?