一、填空(20分) 1、数据库系统三级模式结构是指(),(),()。二级映象是指(),()

9.1 串行扩展概述 9.2 UART串行扩展接口 9.3 I2C串行扩展总线 9.4 SPI串行扩展接口

8.1 串行通信概述 8.2 常用的串行通信总线 8.3 MCS-51的串行接口 8.4 MCS-51单片机之间的通信

湖南大学：《数据库原理及应用》课程教学资源_VFP主窗口

5.1 中断系统结构与控制 5.2 中断处理过程 5.3 外部中断扩展

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

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

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

5.1 数据库的安全性 5.2 完整性控制 5.3 并发控制与封锁 5.4 数据库的恢复