Câu 68: Databricks Certified Data Engineer Associate

A data engineer has developed a data pipeline to ingest data from a JSON source using Auto Loader, but the engineer has not provided any type inference or schema hints in their pipeline. Upon reviewing the data, the data engineer has noticed that all of the columns in the target table are of the string type despite some of the fields only including float or boolean values. Why has Auto Loader inferred all of the columns to be of the string type?

1. A. Auto Loader cannot infer the schema of ingested data
2. B. JSON data is a text-based format — đáp án hiện tại
3. C. Auto Loader only works with string data
4. D. All of the fields had at least one null value