| 1234567891011121314151617181920212223242526272829303132333435363738 | [[dynamic-mapping]]== Dynamic MappingOne of the most important features of Elasticsearch is that it tries to getout of your way and let you start exploring your data as quickly as possible.To index a document, you don't have to first create an index, define a mappingtype, and define your fields -- you can just index a document and the index,type, and fields will spring to life automatically:[source,js]--------------------------------------------------PUT data/_doc/1 <1>{ "count": 5 }--------------------------------------------------// CONSOLE<1> Creates the `data` index, the `_doc` mapping type, and a field    called `count` with datatype `long`.The automatic detection and addition of new fields is called_dynamic mapping_. The dynamic mapping rules can be customised to suit yourpurposes with:<<dynamic-field-mapping,Dynamic field mappings>>::    The rules governing dynamic field detection.<<dynamic-templates,Dynamic templates>>::    Custom rules to configure the mapping for dynamically added fields.TIP: <<indices-templates,Index templates>> allow you to configure the defaultmappings, settings and aliases for new indices, whether createdautomatically or explicitly.include::dynamic/field-mapping.asciidoc[]include::dynamic/templates.asciidoc[]
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