Double
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What is Double?
Double data type in MongoDB stores 64-bit floating-point numbers following IEEE 754 standard, providing high precision for decimal calculations. It's the default numeric type for JavaScript numbers and handles both integers and decimals. Doubles support mathematical operations in queries and aggregation pipelines, though precision limitations may occur with very large numbers or repeated calculations requiring exact decimal representation.
Free resources to learn Double
- Official docsDouble
- ArticleDouble Data Type
More in stage 3: Collections & Methods
- Collections & Methods
- Counting Documents
- insert() and relevant
- find() and relevant
- update() and relevant
- delete() and relevant
- bulkWrite() and relevant
- validate()
- BSON vs JSON
- Embedded Objects & Arrays
- String
- Array
- Object
- Binary Data
- Undefined
- Object ID
- Boolean
- Date
- Null
- Regular Expression
- JavaScript
- Symbol
- Int64 / Long
- Int32/Int
- Timestamp
- Decimal128
- Min Key
- Max Key
Double: common questions
Can I learn Double in Hindi?
This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Double in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.
Is this Double tutorial for beginners?
It is lesson 18 of 106 in the free MongoDB roadmap, in stage 3, Collections & Methods. If you are new to MongoDB, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.