2022年6月24日
Lecture 08 Concurrency Control Part I (Transactions)
摘要： Transaction Concept: A transaction is a unit of program execution that accesses and possibly updates various data items. A transaction is the executio 阅读全文
posted @ 2022-06-24 23:09 M1stF0rest 阅读(74) 评论(0) 推荐(0)
Lecture 07 Functional Dependency
摘要： First Normal Form： Domain is atomic if its elements are considered to be indivisible units A relational schema R is in first normal form if the domain 阅读全文
posted @ 2022-06-24 14:34 M1stF0rest 阅读(130) 评论(0) 推荐(0)