英翻英,同意转换,改写工具,以下是原文: The ability to rewrite sentences so that they have the same meaning as the original is often required for many English ESL EFL Exams such as Cambridge's First Certificate, CAE and Proficiency. This skill can also help you prepar
PURPLE was the designation given by U.S. cryptanalysts to the cipher machine used by the Japanese Foreign Office for secure communications before and during WW 2. We present the structure and internal wiring of the machine, as well as details of the
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Effectively create and manage complex databases with Oracle! Systems and database expert Kevin Owens explores PL/SQL, Oracle's answer to the Structured Query Language (SQL), and teaches you what you need to know to build robust and complex databases
The Art of SQL Dedication Preface Why Another SQL Book? Audience Assumptions This Book Makes Contents of This Book Conventions Used in This Book Using Code Examples Comments and Questions Safari® Enabled Acknowledgments Chapter 1. Laying Plans Secti
Packaging performs two basic functions–marketing and logistics. In marketing the packaging acts promotion and advertising. Its size, weight, color, and printed information attract customers and convey knowledge of the product. When firms are involve
以前用Sql Server只会对图形界面进行操作，现在发现自己的Sql语言功底是越来越差了，例如如何为两个表添加关联，让他们级联更新和级联 删除。 到晚上查了一下，发现可以用两种办法 触发器方式： create trigger trg_A on A for update,delete as begin if exists(select 1 from inserted) update B set Name=(select Name from inserted) where Name=(selec
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表设计器是一个小工具，帮助您在几秒钟内快速创建表数据模型。 特点： 1.Table model design: create table, fields, primary key, foreign key and comments 2.Text scr ipt to create models quickly 3.Diagram layout with logical and physical model views 4.Import exists tables from database (
