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搜索关键字:constraints    ( 386个结果
Sicily 1389. Linear Pachinko
1389. Linear Pachinko Constraints Time Limit: 1 secs, Memory Limit: 32 MB Description This problem is inspired by Pachinko, a popular game in Japan. A traditional Pachinko machine is...
分类:其他好文   时间:2015-03-29 13:44:32    阅读次数:124
Sicily 1321. Robot
1321. Robot Constraints Time Limit: 1 secs, Memory Limit: 32 MB Description Karell Incorporated has designed a new exploration robot that has the ability to explore new terrains, thi...
分类:其他好文   时间:2015-03-29 13:44:15    阅读次数:243
Oracle 查看某表 被哪些表外键引用
分2步骤:1.select * from user_constraints e where e.table_name='xxx';2.select a.constraint_type,a.table_name,a.status, b.table_name,b.column_name,b.const....
分类:数据库   时间:2015-03-19 20:04:09    阅读次数:315
oracle删除用户所有表
在删除数据表的时候往往遇到外键约束无法删除的情况,我们可以通过以下几步将数据库表删除,建议在删除库之前先对数据库进行备份,养成良好习惯。1.删除外键--查询用户所有表的外键,owner条件为userselect * from user_constraints c where c.constraint...
分类:数据库   时间:2015-03-17 00:40:07    阅读次数:266
uva 116 Unidirectional TSP (DP)
uva 116 Unidirectional TSPBackgroundProblems that require minimum paths through some domain appear in many different areas of computer science. For example, one of the constraints in VLSI routing probl...
分类:其他好文   时间:2015-03-12 20:54:14    阅读次数:185
CodeFirst 级联删除问题
codefirst涉及到级联删除时可能会报下面的错误: table 'TableName' may cause cycles or multiple cascade paths. Specify ON DELETE NO ACTION or ON UPDATE NO ACTION, or modify other FOREIGN KEY constraints. 这是由于同一张表中使用了同一个...
分类:其他好文   时间:2015-03-10 13:58:31    阅读次数:130
Error applying BeanValidation relational constraints错误的解决
错误示例:Exception in thread "main" org.hibernate.HibernateException: Error applying BeanValidation relational constraintsat org.hibernate.cfg.beanvalidat...
分类:移动开发   时间:2015-03-08 20:00:23    阅读次数:160
UML基本架构建模--通用机制的术语和概念(四)
Constraints 约束   Everything in the UML has its own semantics. Generalization (usually, if you know what’s good for you) implies the LisKov substitution principle, and multiple associati...
分类:其他好文   时间:2015-03-06 09:41:44    阅读次数:171
UML基本架构建模--通用机制的术语和概念(一)
??   Terms and Concepts 术语和概念   A note is a graphical symbol for rendering constraints or comments attached to an element or a collection of elements. Graphically, a note is rendered as a...
分类:其他好文   时间:2015-03-05 08:07:36    阅读次数:198
一个不靠谱的2D物理引擎(5) - 约束(Constraints)
参考:http://blog.sina.com.cn/s/blog_61feffe10100msbz.html,http://allenchou.net/2013/12/game-physics-constraints-sequential-impulse/约束就是限制物体的运动方式, 可以用来处理...
分类:其他好文   时间:2015-03-04 18:37:21    阅读次数:351
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