When you use a relational database, you need a way to track and organize your database schema evolutions. Typically there are several situation where ...
分类:
数据库 时间:
2015-04-22 13:37:18
阅读次数:
221
create database 作业use 作业--创建学生表create table Student(Sno char(3) primary key not null,Sname char(8) not null,Ssex char(2) not null,Sbirthday datetime ....
分类:
数据库 时间:
2015-04-22 13:32:45
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226
The Play logger is built onLog4j. Since most Java libraries use Log4j or a wrapper able to use Log4j as a backend, you can easily configure logging th...
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其他好文 时间:
2015-04-22 13:29:16
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233
To create high-performance systems, sometimes you need to cache data. Play has a cache library and will useMemcachedwhen used in a distributed environ...
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系统相关 时间:
2015-04-22 13:21:43
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213
CodeIgniter SESSION 第一次用 session 遇到这个错误 ,说是要加一个密钥才可以使用,加就加吧,打开 config.php 找到以下代码/*|-------------------------------------------------------------------...
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其他好文 时间:
2015-04-22 13:19:01
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146
在Linux下安装完mysql之后,通常需要作如下修改才能比较方便地使用1. 添加一个远程连接用户通常我们需要从外部远程连接mysql数据库,mysql数据库默认是没有设置允许远程连接的用户的,我们需要自己添加。可以先查看当前mysql数据库中已存在的用户:use mysql;select host...
分类:
数据库 时间:
2015-04-22 13:14:28
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223
When you work in a team, different developers will use different configuration keys in theirapplication.conf. For example, the log level, some databas...
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移动开发 时间:
2015-04-22 13:14:09
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122
Validations ensure that the data has certain values or meets specific requirements. You can use validation to verify that your models are correct befo...
分类:
Web程序 时间:
2015-04-22 13:08:30
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208
在mysql中添加用户的方法如下:1 使用root用户登录mysql -u root -p2 选择mysql数据库use mysql3 添加用户insert into user(Host,User,Password) values("localhost","你的用户名",password("你的密码...
分类:
数据库 时间:
2015-04-22 13:05:16
阅读次数:
174
E-mail functionality uses theApache Commons Emaillibrary under the hood. You can use theplay.libs.Mailutility class to send e-mail very easily.A simpl...
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其他好文 时间:
2015-04-22 13:03:22
阅读次数:
232