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• ORM, JPA Object Relation Mapping - RDB를 Java에서 OOP 답게 쓸 수 있도록 JAVA Persistence Application Programing Interface - Persistence Interface 기존 SQL Mapper 방식과 비교되는 ORM Java는 객체지향, DB와는 개념이 다르다 기존 SQL Mapper 방식은 DB의 방식을 blog.naver.com · 2021.08.09
• currentDate / Time in Millisecondsmillis Java programming examples and explanations.Sync ServiceMinutes since EpochFree synchronization web service authority.Used in games, trial software, internet capable controllers, etc.StandardsClient-Centric Time · Persistence blog.naver.com · 2017.08.24
• JPA implementations comparison: Hibernate, Toplink Essentials, Openjpa, Eclipselink to the lack of information on the net about theperformance differences among the 4 most well known Java Persistence API (JPA) implementations: Toplink Essentials, EclipseLink, Hibernate andOpenJPA. blog.naver.com · 2011.01.17