Online shell allows you to try out MongoDB without installing

Morphia's filter operators closely map to the query operators used in MongoDB queries.

Morphia的筛选运算符紧密地映射到用于MongoDB查询的查询运算符。

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Read Reflections on MongoDB to learn how Collective Idea has made the switch.

阅读MongoDB思考，了解业界观念如何转变。

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But for applications that require high performance throughput and a flexible data model, MongoDB could be worth a look.

但是对于那些需要高性能流量和灵活数据模型的应用程序来说，MongoDB值得一看。

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To get other administration information, you can also run the following commands in the MongoDB shell

为了获得其他管理信息，也可以在MongoDB shell中运行以下命令

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In the MongoDB shell, it is very easy to update documents.

在MongoDB shell中，更新文档非常容易。

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Learn more about the MongoDB map/ reduce functions.

了解有关MongoDB map/reduce函数的更多信息。

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If the database does not exist, MongoDB will create it as soon as you add any data to it.

如果数据库不存在，在您将数据添加到数据库时，MongoDB将会创建它。

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MongoDB's query engine also makes it very simple to apply aggregation and group functions on your data.

MongoDB的查询引擎也使得对数据应用聚合和分组函数变得非常简单。

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You can easily replicate this functionality in MongoDB using the skip and limit functions.

您在MongoDB中只需使用skip和limit函数即可实现这一功能。

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Some, like mongodb, help to develop open source technologies.

一些工具，比如MongoDB，能够帮助开发开源技术。

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You are now connected to your local MongoDB server, and in particular, the "test" database.

您现在已连接到本地MongoDB服务器，尤其是“测试”服务器。

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A MongoDB based Repository could be a simple approach to provide persistence in projects based on DDD.

在DDD的项目里，基于MongoDB的仓库能方便地用于提供持久化功能。

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MongoDB is now set up and ready to use.

MongoDB现在设置完成并准备使用。

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Included with the MongoDB distribution is a shell application that allows you complete control over your databases.

MongoDB发行版包含一个shell应用程序，使您能够完全控制数据库。

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With this application, I'm going to first capture some information from Twitter and store it in MongoDB.

通过此应用程序，我将首先从Twitter捕获一些信息并将其存储在MongoDB中。

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To delete data in MongoDB, you use the remove function.

要删除MongoDB中的数据，可使用remove函数。

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MongoDB supports a variety of conditional operators, including

MongoDB支持各种条件运算符，包括

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Morphia automatically creates this field to record the type of the object in MongoDB.

Morphia自动创建此字段以便记录MongoDB中的对象类型。

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This will start the MongoDB database server as a foreground process.

这将作为前台进程启动MongoDB数据库服务器。

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Getting started with MongoDB couldn't be easier, especially because it offers downloads for target operating systems.

MongoDB入门再简单不过了，尤其因为其为目标操作系统提供了下载。

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