There are some major differences that exist between WCF and a Web service which are listed below.这里总结了WCF和网络服务之间主要的不同之处Attributes- WCF service is defi...
分类:
Web程序 时间:
2015-07-07 21:08:53
阅读次数:
150
In most OBIA projects we create both incremental and full load mappings for each tables in Date Warehouse target. Below you can find the difference between both.
Full Load is the entire data dump...
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其他好文 时间:
2015-07-07 17:09:26
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161
the difference between an embOS interrupt and a zero latency interrupt is the interrupt priority level and the usage of OS_EnterInterrupt()/OS_LeaveIn...
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其他好文 时间:
2015-07-07 14:37:42
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136
1)inter-、intra-、intro-
三个前缀inter-,intra-和intro-还是有区别的,
inter-表between,如international那是between
different nations;
intra-表within,比如intramural
[,?ntr?'mj??r(?)l] adj.校内的;内部的;城市内的,那是within the wall...
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其他好文 时间:
2015-07-07 13:01:56
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111
今天写了一个统计sql,在一个近亿条数据的表上执行,200s都查不出结果。SQL如下:
select customer,count(1) c
from upv_**
where created between "2015-07-06" and "2015-07-07"
group by customer
having c > 20
order by c desc
执行explain...
分类:
数据库 时间:
2015-07-06 19:52:22
阅读次数:
164
The difference between insert and save operations is that a save operation will perform an insert if the object is not already present.savesaves the.....
分类:
数据库 时间:
2015-07-06 19:34:59
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126
很早就知道sendfile这个专门用来传输大文件的函数,也称为零拷贝,但一直没测试过,今天用了宿舍的网和小组内的网测试了下,发现结果和我预想的不一样。 为什么效率高,网上说的也很多了,看下man手册中的内容
sendfile() copies data between one file descriptor and another. Because this copying is do...
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其他好文 时间:
2015-07-06 10:23:46
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129
SSH keyAn SSH key allows you to establish a secure connection between your computer and GitLab.Before generating an SSH key, check if your system already has one by running cat ~/.ssh/id_rsa.pubIf you...
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其他好文 时间:
2015-07-06 10:13:45
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502
更好的看↑代码点击VIEW PLAN第二章 约束和排序数据1. 在 emp 表中选择工资介于 1500 到 2500 的员工的信息;注意:使用 between 下边界 and 上边界时。条件包括边界值;SCOTT@ORCL>l 1 select * from emp 2* ...
分类:
数据库 时间:
2015-07-05 21:05:44
阅读次数:
200
GOF给出的定义:Define a one-to-many dependency between objects so that when one object changes state, all its dependents are notified and updated automatica...
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其他好文 时间:
2015-07-05 13:47:13
阅读次数:
118