At the Forge - Advanced MongoDB

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A look at some of MongoDB's features, such as indexing and object relationships.
Conclusion

MongoDB is an impressive database, with extensive documentation and drivers. It is easy to begin working with MongoDB, and the interactive shell is straightforward for anyone with even a bit of JavaScript and database experience. Indexes are fairly easy to understand, create and apply.

Where things get tricky, and even sticky, is precisely in the area where relational databases have excelled (and have been optimized) for decades—namely, the interactions and associations among related objects, ensuring data integrity without compromising speed too much. I'm sure MongoDB will continue to improve in this area, but for now, this is the main thing that bothers me about MongoDB. Nevertheless, I've been impressed by what I've seen so far, and I easily can imagine using it on some of my future projects, especially those that will have a limited number of cross-collection references.

Reuven M. Lerner is a longtime Web developer, trainer, and consultant. He is a PhD candidate in Learning Sciences at Northwestern University. Reuven lives with his wife and three children in Modi'in, Israel.

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