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Update ngsi_mongo_sink.md
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AlvaroVega authored Oct 20, 2023
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Expand Up @@ -288,15 +288,6 @@ If `data_model=dm-by-entity` and `attr_persistence=column` then `NGSIMongoSink`
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### <a name="section1.4"></a>MongoDB Indexes

Since version 3.0.0 of cygnus index named `cyg_agg_opt` is created in this way but depending on datamodel:

| datamodel | keys |
| :--------------- | :------------------------------------------------- |
| DMBYSERVICEPATH | entityId, entityType, attrName, resolution, origin |
| DMBYENTITY | attrName, resolution, origin |
| DMBYATTRIBUTE | resolution, origin |

Since version 3.0.0 of cygnus an index named `cyg_raw_opt` is created in this way but depending on datamodel:

| datamodel | keys |
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