데이터베이스

Database Systems

• Database Foundations

  How databases are defined at a basic level, from core vocabulary and keys to the high-level role of relational and NoSQL systems.

• Data Modeling and Design

  How database schemas are modeled and refined through ERD, integrity constraints, functional dependency, and normalization.

• Relational Queries and Joins

  How relational operations shape result sets, from join types and grouping semantics to query composition patterns.

• Database Internals

  How relational databases store, index, and retrieve data — from on-disk structures to query execution.