# Tag Historian v/s SQL Bridge

**URL:** <https://forum.inductiveautomation.com/t/tag-historian-v-s-sql-bridge/11291>\
**Category:** Ignition\
**Created:** [March 1, 2016, 2:23pm UTC](https://forum.inductiveautomation.com/t/tag-historian-v-s-sql-bridge/11291 "2016-03-01T14:23:34Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![dhananjay\_vichare](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/dhananjay_vichare/32/74712_2.png) [@dhananjay\_vichare](https://forum.inductiveautomation.com/u/dhananjay_vichare)\
**Post date:** [March 1, 2016, 2:23pm UTC](https://forum.inductiveautomation.com/t/tag-historian-v-s-sql-bridge/11291/1 "2016-03-01T14:23:34Z")

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Please guide me about Tag Historian module v/s SQL Bridge module.

Where did I get the detail documentation about the Tag Historian?

I have license for Tag historian module and I want to use “Transaction group” to log the data to MySQL Database.

Which transaction group I can use?

Standard  
Block  
Historical  
Stored Procedure

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**Author:** ![diat150](https://avatars.discourse-cdn.com/v4/letter/d/a587f6/32.png) [@diat150](https://forum.inductiveautomation.com/u/diat150)\
**Post date:** [March 1, 2016, 3:44pm UTC](https://forum.inductiveautomation.com/t/tag-historian-v-s-sql-bridge/11291/2 "2016-03-01T15:44:06Z")

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You will have to buy the sql bridge module to use the transaction groups. You may also look at using tag change scripts or timer scripts to accomplish your task in the gateway event scripts section of the designer.