vf与mysql的关系是什么？

vf=visual foxpro

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mysql=mysql

相同点：两个都是数据库服务

不同点：

【vf】是很老的数据了，现在已基本被淘汰，相当难用；现在桌面数据库最简单的就是用access，都是出于微软的，不跨平台，只能用于windows系统。vf安装和部署都相当麻烦，发布机器变态。当然我说的是以前，现在不知道是什么情况。

【mysql】开源跨平台数据库，很多开源软件都是用他写的。传说中的lamp里的m，就是mysql。这个数据库虽然比不上类似sqlserver、oracle之类的级别，但是作为中小型应用还是不错的。不过要提醒一点，虽然mysql开源，但是并不免费，商用是要收钱的。个人免费。

不知道你为什么要比这两个数据库，基本上不是一个时代和级别的。vf你就不要学了，没必要。可以学习一下mysql。

当然，我本人是基本不用mysql的，因为不免费；sqlserver也基本不用，因为收费而且不跨平台。我自己用的数据库是sqlite、firebird、postgresql等。开元免费跨平台，各种规模的都可以分别胜任。

MySQL数据库与MSSQL Server有什么不同

简单的说就是

mssql是asp和asp.net是黄金搭档

mysql是PHP是黄金搭档

他们相互结合比较好用，速度也比较快！！！

MSSQL就是前面说的SQLSERVER，MS是微软的缩写

MYSQL是一套免费的数据库管理系统，因为国外对盗版打击的很严MSSQL是微软的东东，都需要收钱的，所以免费的MYSQL很受欢迎，

一般都是跟PHP一起用，结合的很好，ASP。NET跟MYSQL不适合一起用。

高分求翻译~~

The main part of the design of hardware to solve the data received from the one-way within the network, and network data from the device database is written out, one way to solve the data transfer, RS-232 serial port devices use in a transmit data line and a root ground for transmission equipment Arm_linux operating system, the stability of this operating system is better suited to real-time data transmission services, operating outside the network open-source database using the freetds library additions and deletions to the database. Hardware, software mainly ARMLinux as the core operating system, network server receiving data within an infinite loop to read data using unpack, the external network database operations directly connected modules FREETDS SQLSERVER additions and deletions to the database server operations. To achieve the data from the software within the network from outside networks, one-way release.

This system is applied to the Land and Resources Bureau of Changchun City, e-government system as a module released outside the network, the Changchun City Land Resources Web site requires registration and outside the network card and workflow for real-time status data. Changchun City Land and Resources issued outside the main data network for the registration card and workflow status data, these two data are very concerned about the people, so the following Land and Resources Bureau of Changchun City, the data within the network as an example to explain the data published released in the middle of special equipment for service development.

Changchun City Land and Resources issued outside the network data services, delphi development is the use of system services components. Sqlserver ado connection through the network database to obtain updated data into a sql statement, the company's pcommlite components through access to XOMA COM1, and send data, receive data released equipment sqlserver database connection outside the network, after the implementation of data update sql statement.

Java编程环境下数据库的选择

系统很简单的话用MYSQL

就好

如果以后想要扩展功能的话

建议最好用hibernate框架来连接数据库

虽然做的时候稍微麻烦点

但这个已经是JAVA

主流了

以后也方便维护

sql server2008 r2数据库安装的问题！

我举个例子，买热水瓶胆的人对顾客说，你再去买个壳就能用了。这不是很正常吗？客户应该自己去买个sqlserver2008，并且由微软的人负责装好。不过这一切都应该在签合同的时候就和客户谈好的。

现在你都开发完了，再来谈这个，无非是几条路

1. 让客户自己去买个sqlserver2008，由微软的人安装。

2. 帮客户装个D版的sqlserver2008，并且告诉他们，这安装是免费服务，维护是要收钱的。

3. 考虑换个数据库，并谈好由客户搞定数据库的问题，你只负责开发。

本文标题：sqlserver收钱,sqlserver要钱吗
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