跟的是Spring 2022。 刚开始还惊讶CS自学指南的MIT6.824: Distributed System预计学时为什么是200小时，学了几天终于知道为什么需要

Lecture #01: Course Introduction and the Relational Model Relational Model The relational model defines a database abstraction based on relations to avoid maintenance overhead. Key tenets: Store database in simple data structures(relations). Physical storage left up to the DBMS implementation. Access data through high-level language, DBMS figures out best execution strategy. n-ary Relation = Table with n columns Relational Algebra: JOIN Databases are ubiquitous. Lecture #02: Advanced SQL SQL is

豆瓣🔗： 英文：Designing Data-Intensive Applications 中文：《数据密集型应用系统设计》 atomic In the context of concurrent operations: describing an operation that appears to take effect at a single point in time, so another concurrent process can never encounter the operation in a “hal