9.1空间数据库概述 9.2空间数据管理 9.3空间数据库引擎 9.4空间数据组织 9.5空间索引

6.1数据编辑 6.2几何纠正 6.3投影变换 6.4数据结构转换 6.5图幅拼接 6.6数据压缩

3.1地理空间与空间实体 3.2概念数据模型 3.3逻辑数据模型 3.4空间关系

坐标系统和时间系统是描述卫星运动、处 理观测数据和表达观测站位置的数学与物 理基础

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

1.双通道数字存储示波器GDS-820/840 的使用 2.直流电源的使用介绍 3. 数字万用表的使用

1.1 单片机概述 1.2 微型计算机系统组成 1.3 微型计算机的运算基础知识

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