This document discusses NoSQL databases and MongoDB. It introduces MongoDB and its data structure and queries. It then describes MongoMapper, a Ruby library that provides an ActiveRecord-like interface for MongoDB. It shows how to define MongoDB document schemas and queries using MongoMapper.Read less
![NoSQL を Ruby で実践するための n 個の方法](https://cdn-ak-scissors.b.st-hatena.com/image/square/d5ee90103fb887bbb5bf2a153d54ade4c6ac6814/height=288;version=1;width=512/https%3A%2F%2Fcdn.slidesharecdn.com%2Fss_thumbnails%2Fnosql-100725072626-phpapp01-thumbnail.jpg%3Fwidth%3D640%26height%3D640%26fit%3Dbounds)