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PHP Advanced and Object-Oriented Programming 3rd Edition Related to modularity is abstraction: classes should be defined broadly. This is a common and 阅读全文
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1-检索至少选修＂程军＂老师所授全部课程的学生姓名（SNAME）检索选修了“程军”老师所授全部课程的学生姓名 0-检索选修了“程军”老师所授课程的学生 集合子集，逐步精确，缩小范围 1-是学生-2-选程老师的课-3-选了程老师所有的课 /* 假定 “ 某学生选程老师的课程门数等于程老师所开门数”等价 阅读全文
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PHP Advanced and Object-Oriented Programming Third Edition //Search Engine Optimization The modularized site as written has a number of benefits, star 阅读全文
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https://getcomposer.org/doc/00-intro.md Introduction# Composer is a tool for dependency management in PHP. It allows you to declare the libraries your 阅读全文
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https://html.spec.whatwg.org/multipage/interaction.html#attr-contenteditable 小结： 0-The style element is one of HTML elements. 阅读全文
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https://docs.oracle.com/cd/E19683-01/817-3677/6mj8mbtc9/index.html#chapter6-62988 https://docs.oracle.com/cd/E19683-01/817-3677/chapter3-2/index.html 阅读全文
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https://html.spec.whatwg.org/multipage/introduction.html#is-this-html5? HTML Living Standard — Last Updated 12 August 2016 1.2 Is this HTML5? This sec 阅读全文
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https://en.wikipedia.org/wiki/ACID https://zh.wikipedia.org/wiki/ACID //ACID compliant ， row-level locking ， FOREIGN KEY 行锁 表锁 //a small footprint , T 阅读全文