if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[FK_分錄表_憑證表]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[分錄表] DROP CONSTRAINT FK_分錄表_憑證表 GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[本期匯總賬簿_科目代碼_fk]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[本期匯總賬簿] DROP CONSTRAINT 本期匯總賬簿_科目代碼_fk GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[本期明細賬簿_科目代碼_fk]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[本期明細賬簿] DROP CONSTRAINT 本期明細賬簿_科目代碼_fk GO if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[分錄表_科目代碼_fk]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[分錄表] DROP CONSTRAINT 分錄表_科目代碼_fk GO
上傳時間: 2013-11-20
上傳用戶:清山綠水
if exists (select * from dbo.sysobjects where id = object_id(N\'[dbo].[圖書丟失_圖書編號_fk]\') and OBJECTPROPERTY(id, N\'IsForeignKey\') = 1) ALTER TABLE [dbo].[圖書丟失] DROP CONSTRAINT 圖書丟失_圖書編號_fk GO if exists (select * from dbo.sysobjects where id = object_id(N\'[dbo].[FK_圖書罰款_圖書信息]\') and OBJECTPROPERTY(id, N\'IsForeignKey\') = 1) ALTER TABLE [dbo].[圖書罰款] DROP CONSTRAINT FK_圖書罰款_圖書信息 GO if exists (select * from dbo.sysobjects where id = object_id(N\'[dbo].[圖書歸還_圖書編號_fk]\') and OBJECTPROPERTY(id, N\'IsForeignKey\') = 1) ALTER TABLE [dbo].[圖書歸還] DROP CONSTRAINT 圖書歸還_圖書編號_fk GO if exists (select * from dbo.sysobjects where id = object_id(N\'[dbo].[圖書借閱_圖書編號_fk]\') and OBJECTPROPERTY(id, N\'IsForeignKey\') = 1) ALTER TABLE [dbo].[圖書借閱] DROP CONSTRAINT 圖書借閱_圖書編號_fk GO if exists (select * from dbo.sysobjects where id = object_id(N\'[dbo].[FK_圖書征訂_圖書信息]\') and OBJECTPROPERTY(id, N\'IsForeignKey\') = 1) ALTER TABLE [dbo].[圖書征訂] DROP CONSTRAINT FK_圖書征訂_圖書信息 GO if exists (select * from dbo.sysobjects where id = object_id(N\'[dbo].[圖書注銷_圖書編號_fk]\') and OBJECTPROPERTY(id, N\'IsForeignKey\') = 1) ALTER TABLE [dbo].[圖書注銷] DROP CONSTRAINT 圖書注銷_圖書編號_fk
上傳時間: 2014-05-04
上傳用戶:togetsomething
印刷電路板(PCB)設計解決方案市場和技術領軍企業Mentor Graphics(Mentor Graphics)宣布推出HyperLynx® PI(電源完整性)產品,滿足業內高端設計者對于高性能電子產品的需求。HyperLynx PI產品不僅提供簡單易學、操作便捷,又精確的分析,讓團隊成員能夠設計可行的電源供應系統;同時縮短設計周期,減少原型生成、重復制造,也相應降低產品成本。隨著當今各種高性能/高密度/高腳數集成電路的出現,傳輸系統的設計越來越需要工程師與布局設計人員的緊密合作,以確保能夠透過眾多PCB電源與接地結構,為IC提供純凈、充足的電力。配合先前推出的HyperLynx信號完整性(SI)分析和確認產品組件,Mentor Graphics目前為用戶提供的高性能電子產品設計堪稱業內最全面最具實用性的解決方案。“我們擁有非常高端的用戶,受到高性能集成電路多重電壓等級和電源要求的驅使,需要在一個單一的PCB中設計30余套電力供應結構。”Mentor Graphics副總裁兼系統設計事業部總經理Henry Potts表示。“上述結構的設計需要快速而準 確的直流壓降(DC Power Drop)和電源雜訊(Power Noise)分析。擁有了精確的分析信息,電源與接地層結構和解藕電容數(de-coupling capacitor number)以及位置都可以決定,得以避免過于保守的設計和高昂的產品成本。”
上傳時間: 2013-10-31
上傳用戶:ljd123456
A simple C program to strobe the LEDsvia Port D. The strobe rate is to be set by adjusting the voltage drop over a potentiometer that is sampled by an ADC.
上傳時間: 2014-01-09
上傳用戶:lifangyuan12
MFC Black Book Introduction: Are you an MFC programmer? Good. There are two types of MFC programmers. What kind are you? The first kind are the good programmers who write programs that conform to the way MFC wants you to do things. The second bunch are wild-eyed anarchists who insist on getting things done their way. Me, I’m in the second group. If you are in the same boat (or would like to be) this book is for you. This book won’t teach you MFC—not in the traditional sense. You should pick it up with a good understanding of basic MFC programming and a desire to do things differently. This isn’t a Scribble tutorial (although I will review some fundamentals in the first chapter). You will learn how to wring every drop from your MFC programs. You’ll discover how to use, abuse, and abandon the document/view architecture. If you’ve ever wanted custom archives, you’ll find that, too.
標簽: MFC Introduction programmer programme
上傳時間: 2015-05-30
上傳用戶:youke111
That step-by-step electric motor the step-by-step electric motor assembler program , comparison have been resolved well gets it in gear is able to appear to see dead phenomenon
標簽: step-by-step electric motor comparison
上傳時間: 2015-08-18
上傳用戶:上善若水
中文名:Windows Forms 程序設計 英文名:Windows Forms Programming in c# 作者: Chris Sells 翻譯: 榮耀 蔣賢哲 出版社:人民郵電出版社 代碼內容: The Table of Contents * Foreword * Preface * Chapter 1 Hello, Windows Forms * Chapter 2 Forms * Chapter 3 Dialogs * Chapter 4 Layout * Chapter 5 Drawing Basics * Chapter 6 Drawing Text * Chapter 7 Advanced Drawing * Chapter 8 Printing * Chapter 9 Components * Chapter 10 Controls * Chapter 11 Design-Time Integration: The Properties Window * Chapter 12 Design-Time Integration: Designers and Smart Tags * Chapter 13 Resources * Chapter 14 Applications * Chapter 15 Settings * Chapter 16 Data Binding Basics * Chapter 17 Applied Data Binding * Chapter 18 Multithreaded User Interfaces * Chapter 19 ClickOnce Deployment * Appendix A Whats New in Windows Forms 2.0 * Appendix C Delegates and Events * Appendix D Component and Control Survey * Appendix E Drag and Drop * Appendix F Document Management * Bibliography * Index
標簽: Windows Forms Programming Chris
上傳時間: 2013-12-03
上傳用戶:啊颯颯大師的
SQL是英文Structured Query Language的縮寫,意思為結構化查詢語言。SQL語言的主要功能就是同各種數據庫建立聯系,進行溝通。按照ANSI(美國國家標準協會)的規定, SQL被作為關系型數據庫管理系統的標準語言。SQL語句可以用來執行各種各樣的操作,例如更新數據庫中的數據,從數據庫中提取數據等。目前,絕大多數流 行的關系型數據庫管理系統,如Oracle, Sybase, Microsoft SQL Server, Access等都采用了SQL語言標準。雖然很多數據庫都對SQL語句進行了再開發和擴展,但是包括Select, Insert, Update, Delete, Create, 以及Drop在內的標準的SQL命令仍然可以被用來完成幾乎所有的數據庫操作。下面,我們就來詳細介紹一下SQL語言的基本知識。
標簽: Structured Language Query SQL
上傳時間: 2013-12-20
上傳用戶:410805624
SQL(Structured Query Language,結構查詢語言)是一個功能強大的數據庫語言。SQL通常使用于數據庫的通訊。ANSI(美國國家標準學會)聲稱,SQL是關系數據庫管理系統的標準語言。SQL語句通常用于完成一些數據庫的操作任務,比如在數據庫中更新數據,或者從數據庫中檢索數據。使用SQL的常見關系數據庫管理系統有:Oracle、 Sybase、 Microsoft SQL Server、 Access、 Ingres等等。雖然絕大多數的數據庫系統使用SQL,但是它們同樣有它們自立另外的專有擴展功能用于它們的系統。但是,標準的SQL命令,比如"Select"、 "Insert"、 "Update"、 "Delete"、 "Create"和 "Drop"常常被用于完成絕大多數數據庫的操作。
標簽: Structured Language Query SQL
上傳時間: 2015-10-06
上傳用戶:nairui21
SQL(Structured Query Language,結構查詢語言)是一個功能強大的數據庫語言。SQL通常使用于數據庫的通訊。ANSI(美國國家標準學會)聲稱,SQL是關系數據庫管理系統的標準語言。SQL語句通常用于完成一些數據庫的操作任務,比如在數據庫中更新數據,或者從數據庫中檢索數據。雖然絕大多數的數據庫系統使用SQL,但是它們同樣有它們自立另外的專有擴展功能用于它們的系統。但是,標準的SQL命令,比如"Select"、 "Insert"、 "Update"、 "Delete"、 "Create"和 "Drop"常常被用于完成絕大多數數據庫的操作。
標簽: Structured Language Query SQL
上傳時間: 2013-12-11
上傳用戶:qq1604324866