C. J. Date是關係數據庫技術領域中非常著名的獨立撰稿人、講師、學者和顧問。他撰寫瞭多部數據庫技術書籍,其中最齣名的著作是《數據庫係統導論》,這本書已經銷售瞭大約85萬冊,並被世界範圍內的幾百所大學作為教材使用。他因具有一流的將復雜技術進行清晰解讀的能力而享有盛譽。
SQL is full of difficulties and traps for the unwary. Understanding relational theory is essential for avoiding those traps, but you need to know how to map the ideas of that theory into SQL code. In SQL and Relational Theory, author C.J. Date demonstrates how you can apply relational theory directly to your use of SQL. The second edition includes updated material such as recursive queries, new operators, and extended discussion of topics including aggregate operators, grouping and ungrouping, and view updating. With numerous examples, exercises, and clear explanations, you'll learn how to deal with common SQL dilemmas, such as: * Why is proper column naming so important? * Nulls in your database are causing you to get wrong answers. Why? What can you do about it? * Could you write an SQL query to find employees who have never been in the same department for more than six months at a time? * SQL supports "quantified comparisons," but they're better avoided. Why? How do you avoid them? * Constraints are crucially important, but most SQL products don't support them properly. What can you do to resolve this situation? SQL and Relational Theory draws on decades of research to present the most up-to-date treatment of the material available anywhere. Anyone with a modest to advanced background in SQL will benefit from the many insights in this book.
發表於2024-11-07
SQL and Relational Theory 2024 pdf epub mobi 電子書 下載
【編輯推薦】 關係數據庫領域的經典之作,關係數據領域泰鬥級人物40年經驗的結晶! 【內容簡介】 對於數據庫管理與開發人員來說,使用SQL時會到處遭遇睏難和陷阱。隻有深入理解關係理論,並將理論應用於實踐,纔能避免這些睏難和陷阱。本書作者深入闡述瞭關係理論,以嚴謹的態...
評分【編輯推薦】 關係數據庫領域的經典之作,關係數據領域泰鬥級人物40年經驗的結晶! 【內容簡介】 對於數據庫管理與開發人員來說,使用SQL時會到處遭遇睏難和陷阱。隻有深入理解關係理論,並將理論應用於實踐,纔能避免這些睏難和陷阱。本書作者深入闡述瞭關係理論,以嚴謹的態...
評分【編輯推薦】 關係數據庫領域的經典之作,關係數據領域泰鬥級人物40年經驗的結晶! 【內容簡介】 對於數據庫管理與開發人員來說,使用SQL時會到處遭遇睏難和陷阱。隻有深入理解關係理論,並將理論應用於實踐,纔能避免這些睏難和陷阱。本書作者深入闡述瞭關係理論,以嚴謹的態...
圖書標籤: SQL 數據庫 計算機 程序世界 Database DataBase
Written by a grumbling old brit.......way too verbose.
評分隻讀瞭前麵幾章,實在是比較晦澀的書,書偏理論,而且作者的觀點比較主觀,咬文嚼字的比較多。個人覺得未必要接受作者的觀點,不過通過作者拋齣的觀點,可以進行思考。
評分Written by a grumbling old brit.......way too verbose.
評分C.J. Date 關於SQL和關係理論的一本中級讀物。
評分Written by a grumbling old brit.......way too verbose.
SQL and Relational Theory 2024 pdf epub mobi 電子書 下載