Databricks-DE-Assoc Data Ingestion and Loading Practice Question
A data engineer is configuring a Databricks Auto Loader stream to ingest CSV files from a cloud storage location into a Delta table. The CSV files have a header row, and the engineer wants to automatically infer the schema and store the inferred schema in a specified location for consistency across restarts. Which Auto Loader option should be used to persist the inferred schema?
⚠ Common exam trap
Many candidates confuse schema evolution settings with schema storage configuration; only schemaLocation persists the schema.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Set cloudFiles.schemaLocation to a directory path.
Auto Loader requires a schemaLocation to persist the inferred schema and support schema evolution. Without it, the stream may re-infer the schema on each restart, causing inconsistencies. The other options control schema evolution behavior or listing optimizations but do not provide a storage location for the schema.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Set cloudFiles.inferColumnTypes to 'true'.
Why it's wrong here
This option enables type inference for columns, but it does not store the schema. It is used in conjunction with schema inference but does not provide a persistent location. The requirement is to store the inferred schema, so this option is not correct by itself.
- ✗
Set cloudFiles.schemaEvolutionMode to 'addNewColumns'.
Why it's wrong here
While schemaEvolutionMode controls how new columns are handled, it does not specify where the schema is stored. This option alone does not persist the inferred schema. Without a schemaLocation, Auto Loader may re-infer the schema on each stream restart, leading to inconsistencies. Therefore, this option is insufficient for the requirement.
- ✗
Set cloudFiles.useIncrementalListing to 'true'.
Why it's wrong here
This option optimizes file listing by using incremental listing, but it has no relation to schema storage. It is used to improve performance when listing files, not to persist schema information. Thus, it does not meet the requirement of storing the inferred schema.
- ✓
Set cloudFiles.schemaLocation to a directory path.
Why this is correct
This option correctly specifies the directory where Auto Loader stores the inferred schema and its evolution. By providing a schemaLocation, the stream maintains schema consistency across restarts and allows schema evolution to be tracked. This is the recommended approach when using schema inference with Auto Loader, as it avoids re-inferring the schema on each run and supports adding new columns over time.
About these practice questions
This Databricks-DE-Assoc question is part of Courseiva's 276-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Databricks exam blueprint
This Databricks-DE-Assoc practice question is part of Courseiva's free Databricks certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the Databricks-DE-Assoc exam.