Explain what is a document in ElasticSearch.

1.	Explain what is a document in ElasticSearch.
Answer» The term "document" refers to a unit of information that can be indexed. Each index WITHIN Elasticsearch CONTAINS multiple documents. For instance, you could have a document for EVERY customer, another for every order, etc. These documents are written in JavaScript Object Notation (JSON), which is a widely used format for internet data exchange. Documents are composed of fields, and each field has its own TYPE of data. In a particular index, you can store as many documents as you wish.

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