CS

1.DB : concurrency control 기초 : schedule과 serializability

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2.DB : concurrency control 기초 : recoverability

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3.DB : ACID와 트랜잭션

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4.네트워크: OSI 7 계층

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5.운영체제: 스레드 풀(thread pool)

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6.DB : Transaction Isolation level

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