41. How do $match and $project improve aggregation performance?
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Mongo DB Interview Questions
Found 387 questions
42. What are lookup operations in MongoDB?
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43. How does $lookup differ from SQL joins?
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44. What are unwind operations?
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45. What are transactions in MongoDB?
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46. How does MongoDB support ACID transactions?
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47. What are single-document atomic operations?
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48. What are transaction performance tradeoffs?
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49. How does concurrency control work in MongoDB?
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50. What are locks in MongoDB?
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