……里面有很多至今依然适用的真知灼见。C.J. Date 写的《深入理解数据库》（Database In Depth），适合那些没读过 Date 那本数据库教科书、大概率也没必要去读的程序员。我真心希望那些 NoSQL 喷子能读读 Date 的《数据库系统导论》（Introduction To Database Systems），学点历史，懂得谦逊。数据库技术早就经历过那些、玩透了那些，并且往前走了。
…of good ideas that still apply. Database In Depth by C.J. Date, for programmers who haven't read Date's textbook on databases and probably don't need to. I do wish the NoSQL weenies would read Date's Introduction To Database Systems for some history and humility. Database technology has been there, done that, moved on.
虽老但经典的是 C.J. Date 的《数据库系统导论》。这本书涵盖了数据库所需的大部分概念，以及为什么关系型数据库相比之前的键值、层次和网状数据库是一种进步。人们可以认为……
Old but classic is C.J.Date's "An Introduction to Database Systems". This book covers most concepts required for databases, and the reason why relational databases had been an improvement over prior key-value, hierarchical, and network databases. One could consider…
在我看过的所有数据库理论书籍中，我觉得 C.J Date 的书（《数据库系统导论》）是最优雅的一本，尽管我读的那一版尝试使用 Tutorial D 而不是 SQL。我喜欢它以极高的清晰度向读者展现了关系代数之美。
Of all the database theory books I have seen, I found the C.J Date book(An Introduction to Database Systems) to be the most elegant one, though the edition I used attempted to use tutorialD than SQL. What I liked is that it brought out the beauty of relational algebra to the reader with great clarity.
这本书并非专门讲 MySQL，但要想理解关系型数据库，C. J. Date 的《数据库系统导论》是一本极好的书。读一读它（哪怕只读前几章，后续按需查阅），能帮你理解 SQL 以及整个关系型数据库背后的思维方式。虽然我之前自己琢磨过……
It isn't specific to MySQL, but an excellent book for understanding relational databases is _An Introduction to Database Systems_ by C. J. Date. Reading that (even just the first several chapters, and then others as needed) will help you understand the mindset behind both SQL and relational databases in general. While I had figured…
一个更具体的推荐：C. J. Date 的《数据库系统导论》。提醒一下，他夹带了强烈的个人偏见——他经常批评 SQL，因为 SQL 没能达到关系模型的数学优雅性。（碰巧我赞同他的观点。）他……
A more specific recommendation: _An Introduction to Database Systems_ by C. J. Date. Be warned that he's got an axe to grind - He's often critical of SQL because it doesn't live up to the mathematical elegance of the relational model. (I happen to agree with him.) He…
这很有意思，但我承认我有点懵。读了 C.J. Date 的《数据库系统导论》（http://www.amazon.com/Introduction-Database-Systems-8th/dp/0...）之后，我对关系代数和理论有了极高的敬意，正是它们让闭包函数式本质/语法成为可能……
This is interesting, but I admit I am a bit confused. Having read "An Introduction to Database Systems" by C.J. Date (http://www.amazon.com/Introduction-Database-Systems-8th/dp/0...), I have a tremendous appreciation for Relational Algebra and Theory which allows for the closed functional nature/syntax…
……里面有很多至今依然适用的真知灼见。C.J. Date 写的《深入理解数据库》（Database In Depth），适合那些没读过 Date 那本数据库教科书、大概率也没必要去读的程序员。我真心希望那些 NoSQL 喷子能读读 Date 的《数据库系统导论》（Introduction To Database Systems），学点历史，懂得谦逊。数据库技术早就经历过那些、玩透了那些，并且往前走了。
…of good ideas that still apply. Database In Depth by C.J. Date, for programmers who haven't read Date's textbook on databases and probably don't need to. I do wish the NoSQL weenies would read Date's Introduction To Database Systems for some history and humility. Database technology has been there, done that, moved on.
虽老但经典的是 C.J. Date 的《数据库系统导论》。这本书涵盖了数据库所需的大部分概念，以及为什么关系型数据库相比之前的键值、层次和网状数据库是一种进步。人们可以认为……
Old but classic is C.J.Date's "An Introduction to Database Systems". This book covers most concepts required for databases, and the reason why relational databases had been an improvement over prior key-value, hierarchical, and network databases. One could consider…
在我看过的所有数据库理论书籍中，我觉得 C.J Date 的书（《数据库系统导论》）是最优雅的一本，尽管我读的那一版尝试使用 Tutorial D 而不是 SQL。我喜欢它以极高的清晰度向读者展现了关系代数之美。
Of all the database theory books I have seen, I found the C.J Date book(An Introduction to Database Systems) to be the most elegant one, though the edition I used attempted to use tutorialD than SQL. What I liked is that it brought out the beauty of relational algebra to the reader with great clarity.
这本书并非专门讲 MySQL，但要想理解关系型数据库，C. J. Date 的《数据库系统导论》是一本极好的书。读一读它（哪怕只读前几章，后续按需查阅），能帮你理解 SQL 以及整个关系型数据库背后的思维方式。虽然我之前自己琢磨过……
It isn't specific to MySQL, but an excellent book for understanding relational databases is _An Introduction to Database Systems_ by C. J. Date. Reading that (even just the first several chapters, and then others as needed) will help you understand the mindset behind both SQL and relational databases in general. While I had figured…
一个更具体的推荐：C. J. Date 的《数据库系统导论》。提醒一下，他夹带了强烈的个人偏见——他经常批评 SQL，因为 SQL 没能达到关系模型的数学优雅性。（碰巧我赞同他的观点。）他……
A more specific recommendation: _An Introduction to Database Systems_ by C. J. Date. Be warned that he's got an axe to grind - He's often critical of SQL because it doesn't live up to the mathematical elegance of the relational model. (I happen to agree with him.) He…
这很有意思，但我承认我有点懵。读了 C.J. Date 的《数据库系统导论》（http://www.amazon.com/Introduction-Database-Systems-8th/dp/0...）之后，我对关系代数和理论有了极高的敬意，正是它们让闭包函数式本质/语法成为可能……
This is interesting, but I admit I am a bit confused. Having read "An Introduction to Database Systems" by C.J. Date (http://www.amazon.com/Introduction-Database-Systems-8th/dp/0...), I have a tremendous appreciation for Relational Algebra and Theory which allows for the closed functional nature/syntax…