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mongodb, Programming

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DynamoDB vs MongoDB NoSQL [closed]

Closed. This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be ...

June 3, 2022
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mongodb, Programming

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Find duplicate records in MongoDB

How would I find duplicate fields in a mongo collection. I’d like to check if any of the “name” fields are duplicates. { ...

June 3, 2022
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mongodb, Programming

IT Nursery

How to change the type of a field?

I am trying to change the type of a field from within the mongo shell. I am doing this… db.meta.update( {'fields.properties.default': { $type ...

June 3, 2022
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mongodb, Programming

IT Nursery

How to remove array element in mongodb?

Here is array structure contact: { phone:...

June 3, 2022
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json, Programming

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What is BSON and exactly how is it different from JSON?

I am just starting out with MongoDB and one of the things that I have noticed is that it uses BSON to store ...

June 2, 2022
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mongodb, Programming

IT Nursery

MongoDB: Find a document by non-existence of a field?

Is there a way to specify a condition of “where document doesn’t contain field” ? For example, I want to only find the ...

June 2, 2022
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mongodb, Programming

IT Nursery

Unable to create/open lock file: /data/mongod.lock errno:13 Permission denied

How to I get mongo to use a mounted drive on ec2? I really do not understand. I attached a volume on ec2 ...

June 2, 2022
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mongodb, Programming

IT Nursery

MongoDB logging all queries

The question is as basic as it is simple… How do you log all queries in a “tail”able log file in mongodb? I ...

June 2, 2022
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mongodb, Programming

IT Nursery

mongodb, replicates and error: { “$err” : “not master and slaveOk=false”, “code” : 13435 }

I tried mongo replica sets for the first time. I am using ubuntu on ec2 and I booted up three instances. I used ...

June 1, 2022
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mongodb, Programming

IT Nursery

MongoDB: How to find the exact version of installed MongoDB

I have mongoDB 3.2 installed locally for Windows 7. I would like to find out its specific version (like is it 3.2.1, or ...

June 1, 2022
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