데이터베이스

1.[Database] SQL vs NOSQL

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2.[Database] Index

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3.[Database] Normalization(정규화)

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4.[Database] Transaction

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5.[Database] Transaction Isolation Level

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6.[Database] JOIN

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7.[Database] Entity

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8.[Database]Redis

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9.[Database] DBMS 데이터 언어 _ SQL의 종류

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10.[Database] MYSQL DB 이중화

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