Database System -the first theory class 20/03/02
新学期好，在家穿着睡衣艰难起床，开始学习的快乐旅行
第一节课是dsc老师的数据库，双语教学，睡眠因子蠢蠢欲动，难起来了呀
第一节惯例，老师的自我介绍（极为简短//姓名&联系方式&办公室地址）正文开始
课程成绩评判标准： 作业60%（期末5+期中1）+实验课24%（5个小实验&一个大实验）+报告8%+考勤8%
先举了一个例子，商店购物所涉及到的数据库balaba（虽然我觉第一个笑话一点也 不 好笑/所以这里就不说了）
例子讲完之后开始课程概览，这就很公开透明，很喜欢
一共有九章，第四章开始讲SQL语言，即动手实验课(个人理解，狗头逃命
双语教学， Database Archirecture 数据库结构
what is a database ?A very large ,integrated collection of data.
关键词： structured , interrelated , integrated
models real-world (enterprises or organizations)
Entites & Relationships what is a Database Management System(DBMS) ?
A software package designed to store and manage databases.
Function: manages large amount of data
supports efficient access
supports concurrent access
supports secure , atomic access people working with DBMS
end users / database designers / database application developers / database adminstrators(DBA) / DBMS implementors
DBA’s duties: schema definition
strorage structure and access mehod definition
schema and physical organization modification
granting user authority to access the database
specifying integrity constraints
monitoring performance and responding to change in requirements Data Models:Data structures & relationships & contraints
Entity-Relation data model / Relational model / XML View of Data
（内心os，学不下去了呀………………
作者：陈杉菜
