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fix couple of typos
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@ -256,7 +256,7 @@ db.engineers.find({ $gt: { age: 25 }})
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db.engineers.find({ $gte: { age: 25 }})
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// Find all less than or less than equal to some condition
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db.engineers.find({ $lte: { age: 25 }})
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db.engineers.find({ $lt: { age: 25 }})
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db.engineers.find({ $lte: { age: 25 }})
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// Find all equal or not equal to
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@ -293,7 +293,7 @@ db.engineers.find({ $not: {
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// Must match none of the query conditions
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db.engineers.find({ $nor [
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gender: 'Female,
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gender: 'Female',
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age: {
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$gte: 18
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}
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@ -400,6 +400,6 @@ features, I would look at
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- Aggregation - useful for creating advanced queries to be executed by the
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database
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- Idexing allows for caching, which allows for much faster execution of queries
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- Indexing allows for caching, which allows for much faster execution of queries
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- Sharding allows for horizontal data scaling and distribution between multiple
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machines.
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