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Simple Example Use Cases
MovieLens User Ratings
First, create a table with tab-delimited text file format:
CREATE TABLE u_data (
userid INT,
movieid INT,
rati...
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其他好文 时间:
2014-06-11 06:32:36
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407
数据库rac启动时报错,日志如下,后来使用
Sat Jun 7 06:02:11 2014
GATHER_STATS_JOB encountered errors. Check the trace file.
Sat Jun 7 06:02:11 2014
Errors in file /oracle/product/admin/dqb/bdump/dqb2_j001_1...
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数据库 时间:
2014-06-10 14:36:54
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248
使用sql语句创建和删除约束
主建约束:(primary key constraint);
唯一约束:(unique constraint);
检查约束:(check constraint);
默认约束:(default constraint);
外建约束:(foreign key constraint);
*********************************************...
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数据库 时间:
2014-06-10 13:28:14
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260
Given a binary tree, check whether it is a
mirror of itself (ie, symmetric around its center).For example, this binary tree
is symmetric: 1 / \ ...
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其他好文 时间:
2014-06-10 11:51:42
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213
奇偶校验位是一个表示给定位数的二进制数中1的个数是奇数还是偶数的二进制数。奇偶校验位是最简单的错误检测码。A
parity bit, or check bit is a bit added to the end of a string of binary code
that indicates wh...
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Web程序 时间:
2014-06-10 11:51:03
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288
this blog will make your emacs as C++ IDE. It
implements code-completion, google-style-check and project manager.
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编程语言 时间:
2014-06-09 13:07:04
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696
转自:http://www.cnblogs.com/caios/p/3771015.htmlWelcome
to Swift (苹果官方Swift文档初译与注解二)---6~10页Simple Values翻译来自: Apple Inc. “The Swift
Programming Languag...
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移动开发 时间:
2014-06-08 23:42:49
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447
A simple problemAccepted : 30Submit : 303Time
Limit : 15000 MSMemory Limit : 655360 KBProblem DescriptionThere is a simple
problem. Given a number N. ...
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其他好文 时间:
2014-06-08 21:14:04
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226
A Simple Math ProblemTime Limit: 3000/1000 MS
(Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s):
2441Accepted Submission(s): 1...
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其他好文 时间:
2014-06-08 20:33:48
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175
未翻译完 待续(英语烂,求斧正)Type Casting类型转换Type casting is
a way to check the type of an instance, and/or to treat that instance as if it
is a different supercla...
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其他好文 时间:
2014-06-08 19:50:25
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269