In my previous post, I gave an overview of question answering (Q&A) systems that use LLMs over private enterprise data. I covered the architectures of these systems, the common tools developers use to build these systems when the enterprise data used is structured, i.e., data exists as records stored in some DBMS, relational or graph. I was referring to these systems as RAG systems using structured data. In this post, I cover RAG systems that use unstructured data, such as text files, pdf docume...