MongoDB stores data in the form of documents, which are JSON-like field and value pairs. Documents are analogous to structures in programming languages that associate keys with values (e.g. dictionaries, hashes, maps, and associative arrays). Formally, MongoDB documents are BSON documents. BSON is a binary representation of JSON with additional type information. In the documents, the value of a field can be any of the BSON data types, including other documents, arrays, and arrays of documents. MongoDB stores all documents in collections. A collection is a group of related documents that have a set of shared common indexes. Collections are analogous...
Published ago by ochirkov

  Insert a Document with insert() Method The following statement inserts a document with three fields into the collection inventory: db.inventory.insert( { _id: 10, type: "misc", item: "card", qty: 15 } ) In the example, the document has a user-specified _id field value of 10. The value must be unique within the inventory collection. For more examples, see insert(). Insert a Document with update() Method Call the update() method with the upsert flag to create a new document if no document matches the update’s query criteria.  The following example ...
Published ago by ochirkov

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