README first.



  • Note: This page is intended for things that are common across mongodb and may be useful when reading other articles.

    MongoDB have a number of products: https://www.mongodb.com/products/overview and the open source community product https://www.mongodb.com/download-center/community

    When installing on Ubuntu take note of the following:

    IMPORTANT
    The unofficial mongodb package provided by Ubuntu is not maintained by MongoDB and conflict with MongoDB’s offically supported packages. Use the official MongoDB mongodb-org packages, which are kept up-to-date with the most recent major and minor MongoDB releases.

    MongoDB Terminology.

    • A document is a basic unit of data, similar but not the same to a row in a RDBMS.

    • A collection is similar to a table in RDBMS. In MongoDB it is a collection of documents.

    • An instance of MongoDB, a local install for example can have multiple databases each with their own collections.

    • Every documents has a special key "_id"

    • MongoDB is type-sensitive and case-sensitive

    The following prompt in articles assumes you have mongodb installed and are in the mongodb shell. The shell is a full Javascript interpreter.

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