Complex Query

QOF (Query Object framework) &http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; is a query-like framework, Provides a set of C-language utilities for performing a complex query of data that is held by a set of C++/c++ objects. The framework is unique, it does not require SQL or any database execution queries, programmers do not need to hook up to a SQL database query ...

What is Dynamo? He is a distributed storage engine for Amazon. 　　So what is this engine? First, suppose a scenario where your site wants to store the IP that the user logs on to. How to solve this problem? The traditional method is to use the database. 　　The database provides the convenient operation interface, the complex query ability as well as the thing guarantee. OK, now suppose everyone loves your site, and more people are visiting. A database has not been processed. So you installed 3 database host, the user divided into three categories (male ...)

Geotoad is a search tool for burying treasure. It can generate any complex queries you want, helping you to find the perfect cache access data through advanced queries and output in any conceivable format. Geocache information can be synchronized to your GPS, http://www.aliyun.com/zixun/aggregation/11683.html ">ipod, PDA, or mobile phone in more than 20 different formats." Geotoad 3.14.9 This version ...