oracl 和db2 常用语法比较: 1、取前N条记录 Oracle:Select * from TableName where rownum <= N; DB2:Select * from TableName fetch first N rows only; 2、取得系统日期 Oracle:Select sysdate from dual; DB2:Select current timestamp from sysibm.sysdummy1; 3、空值转换 Oracle:Select
Database System Concepts——数据库系统概念第六版(英文版) 作者: Abraham Silberschatz (Yale University) Henry F. Korth (Lehigh University) S. Sudarshan (Indian Institute of Technology, Bombay) 本书目录: Chapter 1 Introduction 1.1 Database-System Applications 1 1.2 Purpose
Preface ix Chapter 1 Introduction to Design 1 1.1 The Design Process 2 1.2 Engineering Design versus Engineering Analysis 4 1.3 Conventional versus Optimum Design Process 4 1.4 Optimum Design versus Optimal Control 6 1.5 Basic Terminology and Notati