modify: 클러스터드, 논클러스터드 인덱스 개념 수정 #221
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Description
기존의 자료에서는 Primary Index, Secondary Index와 클러스터드 인덱스, 논클러스터드 인덱스의 개념이 혼용된 것 같아서 이에 대한 수정을 하였습니다
DB 시스템 상 Primary Key에 대해서 기본적으로 클러스터드 인덱스가 생성되지만,
Primary Key가 아닌 칼럼에 대해서도 클러스터드 인덱스를 생성할 수 있는 것으로 알고 있습니다.
이에 대해서 검토 해주시면 감사하겠습니다!
P.S. 글 너무 잘 읽고 있습니다 🙏🏻