SQL vs NoSQL
SQL Databases
 DB Types: PostgreSQL, MariaDB, MySQL, Amazon RDS, Amazon Aurora
  Installing Postgres (Linux/Windows)
  DB Commands: Create/Connect/List/Delete database, tables. Insert data
SQL Database Issues
  Stored procedures, Function

NoSQL Databases:
  DB Types: Columnar DB, Graph DB(Cypher, GraphDB)

DB Scaling: Replication, Federation, Sharding
DB Schema
Terms:
  Indexing: Forward Index, Reverse Indexing
  Database Join: Left, Right, Inner, Full, Cross