c++ qt 数据库选择的问题

Question

刚接触c++不久，看了下，好像一般使用SQLite做为数据库，但是这个是轻量级的数据库。现在我的数据量可能很大，上千万什么的。sqlite应该就不适合了吧，考虑常见的mysql。现在有个疑问，我要用mysql做数据库，这样一来，我要开发类似QQ这类面向大众用户的软件，那是不是得需要每个安装软件的人安装mysql？所以就没法这样了呢？

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大部分回答估计都没理解我想表达的意思。我的意思是sqlite轻量型的数据库，可能无法满足我的需求。而Mysql一般用做服务端的，可能无法满足我的需求。

我刚刚查了一下，sqlite还是适用于大量数据场景的

http://www.sqlite.org/limits....

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回头看到了这个问题，最后的解决方案是使用leveldb.能支撑上亿的数据量。http://baike.baidu.com/link?u...

Answer 1

Databases like mysql are generally used to provide services. They only need to send a request from the client. At most, the client only needs to do some caching or software configuration.

Answer 2

Like QQ, maintain a database yourself and then provide a RESTFul interface. All people who use the software can access your interface.

Answer 3

qt does not provide a MySQL driver, you need to compile it yourself

Answer 4

If you have to store data locally, it would be better to use SQLite.
Of course, if possible, you can let the user update the server-side MySQL data to the local SQLite and then read the local database when the user is connected to the Internet.

Answer 5

For local storage, use a file database such as SQLite. The interface is simple, and millions of simple data only takes up dozens of megabytes of space.