Competencies: Databases & SQL

Databases & SQL

Overview

Database competency covers the design, administration, optimization, and interaction patterns for relational, NoSQL, graph, and time-series database systems. This domain is foundational to virtually all software systems.

Industry Frameworks

Oracle Database certifications — enterprise RDBMS
PostgreSQL certification (EDB) — open-source RDBMS
MongoDB certifications — document databases
Redis University — in-memory data structures

Subdomains

Subdomain	Topics	Personal Coverage	Avg Level
Relational / SQL	13	None	—
Database Administration	13	None	—
ORMs & Access Patterns	13	None	—
NoSQL	12	None	—
Graph Databases	11	Low	Beginner