# FAQ

1. #### Which STRUCT or ARRAY columns are supported? 

<figure><img src="/files/10Jb09CrOY3HcsOLNHtm" alt=""><figcaption></figcaption></figure>

#### 2. How does the system avoids hallucination?&#x20;

Connecty's AI is grounded in the semantic layer (Day Zero Semantic Layer + Metric Verse + Catalog + Verified Knowledge) and warehouse data, which avoids hallucinations and enforces consistent definitions. Additionally it checks every AI generation programmatically to verify the entity's existence in the data.


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