[tillvz]

Agree that an approach that more semantically models the data is better, especially when you want to eventually let the non-technical users ask questions.

When you're on a higher abstraction level, it also allows you to make clear definitions (e.g. for certain KPIs) and define business logic that always needs to be applied to get the correct results.

There you don't want to leave it up to chance that a filter gets hallucinated in or out when you ask e.g. about your company's revenue.

At Veezoo (https://www.veezoo.com) we have taken the approach that instead of going directly to SQL. So when a user asks a question, Veezoo translates it first into a query against the Knowledge Graph (which represents the business objects, their relationship etc.). From there we compile it into a SQL query depending on the target database (they all have slight differences) without any AI involvement. In this compilation step we also make sure that the business logic is properly applied.