Design Process Modeling Constraints E-R Diagram Design Issues Weak Entity Sets Extended E-R Features Design of the Bank Database Reduction to Relation Schemas Database Design UML

Tuple Relational Calculus Domain Relational Calculus Query-by-Example (QBE) Datalog

SQL Data Types and Schemas Integrity Constraints Authorization Embedded SQL Dynamic SQL Functions and Procedural Constructs** Recursive Queries** Advanced SQL Features**

Data Definition Basic Query Structure Set Operations Aggregate Functions Null Values Nested Subqueries Complex Queries Views Modification of the Database Joined Relations**

Structure of Relational Databases Fundamental Relational-Algebra-Operations Additional Relational-Algebra-Operations Extended Relational-Algebra-Operations Null Values Modification of the Database

Reasoning with MVDs Higher normal forms Join dependencies and PJNF DKNF

Basic Concepts Tree-Structure Diagrams Data-Retrieval Facility Update Facility Virtual Records Mapping of Hierarchies to Files The IMS Database System

Basic Concepts Data-Structure Diagrams The DBTG CODASYL Model DBTG Data-Retrieval Facility DBTG Update Facility DBTG Set-Processing Facility Mapping of Networks to Files

电子科技大学：《计算电磁学 Computational Electronmagentics》课程教学资源（课件讲稿，矩量法）第8章 矩量法基本原理 8.1 矩量法原理

3.1 Cable Modem的发展背景 3.2 Cable Modem系统工作原理 3.3 Cable Modem的体系结构 3.4 Cable Modem的应用