# Relationship between tables

**URL:** <https://forum.inductiveautomation.com/t/relationship-between-tables/43598>\
**Category:** Ignition\
**Tags:** database\
**Created:** [February 19, 2021, 3:33am UTC](https://forum.inductiveautomation.com/t/relationship-between-tables/43598 "2021-02-19T03:33:03Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![fahad.ansari](https://avatars.discourse-cdn.com/v4/letter/f/c37758/32.png) [@fahad.ansari](https://forum.inductiveautomation.com/u/fahad.ansari)\
**Post date:** [February 19, 2021, 3:33am UTC](https://forum.inductiveautomation.com/t/relationship-between-tables/43598/1 "2021-02-19T03:33:03Z")

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Can someone please help me to understand the relation between **MESMaterialDEF** table and **MESEquipment** table.

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**Author:** ![dkhayes117](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/dkhayes117/32/68344_2.png) [@dkhayes117](https://forum.inductiveautomation.com/u/dkhayes117)\
**Post date:** [February 19, 2021, 12:52pm UTC](https://forum.inductiveautomation.com/t/relationship-between-tables/43598/2 "2021-02-19T12:52:12Z")

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> [@fahad.ansari](#):
>
> **MESMaterialDEF**

This pertains to the Sepasoft MES module, not Ignition itself. I went to the Sepasoft website and did a quick search. Start [here](https://help.sepasoft.com/docs/dosearchsite.action?queryString=+MESMaterialDEF&where=SEPA&additional=space+name&labels=&contentType=)