# Unique Keys For Large Corpus Of Data

**URL:** <https://discuss.elastic.co/t/unique-keys-for-large-corpus-of-data/162200>\
**Category:** Elasticsearch\
**Created:** [December 27, 2018, 5:55am UTC](https://discuss.elastic.co/t/unique-keys-for-large-corpus-of-data/162200 "2018-12-27T05:55:00Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Rashmi\_Nagpal](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/rashmi_nagpal/32/42172_2.png) [@Rashmi\_Nagpal](https://discuss.elastic.co/u/Rashmi_Nagpal)\
**Post date:** [December 27, 2018, 5:55am UTC](https://discuss.elastic.co/t/unique-keys-for-large-corpus-of-data/162200/1 "2018-12-27T05:55:00Z")

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Can someone suggest me how to save large corpus of data pertaining to a single user at single index in elasticsearch, i.e. I want to save person wise data in elasticsearch. For example,  
person\_name1 :  
{ "Aadhar card" : "value11",  
"Pan Card" : "value12",  
"DOB" : "value13"  
},  
person\_name2 :  
{  
"Aadhar card" : "value21",  
"Pan Card" : "value22",  
"DOB"" : "value23"  
}

What unique attribute can I use instead of person\_name as a key, to store his/her details, since person\_name can't be a unique identity. What if I want to update information for that particular person\_name then how will I search on basis of that key?  
Any help is greatly appreciated. 🙂

Thanks.

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**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\
**Post date:** [December 27, 2018, 9:22am UTC](https://discuss.elastic.co/t/unique-keys-for-large-corpus-of-data/162200/2 "2018-12-27T09:22:58Z")

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Where is the data coming from? Have you considered adding a unique identifier to the source of the data?

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<div class="post-metadata">

**Author:** ![Rashmi\_Nagpal](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/rashmi_nagpal/32/42172_2.png) [@Rashmi\_Nagpal](https://discuss.elastic.co/u/Rashmi_Nagpal)\
**Post date:** [January 23, 2019, 5:26am UTC](https://discuss.elastic.co/t/unique-keys-for-large-corpus-of-data/162200/3 "2019-01-23T05:26:29Z")

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Yes, got your point. Thanks for giving insight. 😉

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [February 20, 2019, 5:26am UTC](https://discuss.elastic.co/t/unique-keys-for-large-corpus-of-data/162200/4 "2019-02-20T05:26:33Z")

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Closed on February 20, 2019, 5:26am UTC

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