BSON (.bson)
Background & Context

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- JSON-like binary serialization.
- Schemaless format.
- Represent document as ordered key/value pairs.
- Format used to store data in MongoDB.
- BSON is specified at http://bsonspec.org.
Import & Export

- Import["file.bson"] imports a BSON file as an association.
- ImportString["string","BSON"] imports a BSON string of bytes.
- Export["file",assoc,"BSON"] exports an association to a BSON file.
- ExportString[assoc,"BSON"] exports to a BSON string of bytes.
- The "BSON" format identifies BSON documents with associations of the Wolfram Language.
- The MongoDB database stores data as BSON documents.
- See the following reference pages for full general information:
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Import, Export import from or export to a file CloudImport, CloudExport import from or export to a cloud object ImportString, ExportString import from or export to a string ImportByteArray, ExportByteArray import from or export to a byte array
Import Elements

- General Import elements:
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"Elements" list of elements and options available in this file "Rules" list of rules for all available elements
Examples
Basic Examples (2)
Export an association as a BSON document:
Import the resulting string of bytes as an expression:
DateObject is supported in the BSON format: