8.1概述 8.2 HTML 8.3 VBScript语言

7.1并发控制概述 7.2封锁 7.3封锁协议 7.4活锁和死锁 7.5并发调度的可串行性 76两段锁协议 7.7封锁的粒度 7.8 Oracle的并发控制 7.9小结

存在问题 (1)数据冗余太大 (2)插入异常 (3)删除异常 (4)更新异常

4.1关系系统 一、关系系统的定义 二、关系系统的分类 三、全关系系统12条准则

HRA面临的一大难题一 数据匮乏且可用性不良 人因数据采集极度困难,致使HRA长 期缺乏较充分的可用数据 现有主要人因数据库 人员可靠性分析手册, NUCLARR, 英国CORE-DATA 三方面问题

Chapter 2: Entity-Relationship Model Basic Concepts Constraints Keys Design Issues E-R Diagram Weak Entity Sets Extended E-R Features Design of an E-R Database Schema Reduction of an E-R Schema to Tables

Chapter 3: Relational Model Structure of Relational Databases Relational Algebra Extended Relational-Algebra-Operations Modification of the Database Views Tuple Relational Calculus Domain Relational Calculus Database System Concepts

Chapter 4: SQL Background Basic Structure Set Operations Aggregate Functions Null Values Nested Subqueries Derived Relations Views Modification of the Database Joined Relations

Chapter 7: Relational Database Design First Normal Form Pitfalls in Relational Database Design Functional Dependencies Decomposition Boyce-Codd Normal Form Third Normal Form Multivalued Dependencies and Fourth Normal Form

Chapter 15: Transactions Transaction Concept Transaction State Implementation of Atomicity and Durability Concurrent Executions Serializability Recoverability Implementation of Isolation Transaction Definition in SQL