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RAN-DBDEA-00101
Ranvier · DBDEA

Exam DBDEA Topics: governance Difficulty: easy

An upstream system continuously writes Delta files to s3://acme-raw/legacy/events/, and that system must keep full control of the data's lifecycle. The data team wants to query this existing data with SQL in Unity Catalog without copying or moving it. Which statement registers the existing files as a Unity Catalog external table?

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  1. A. CREATE TABLE main.legacy.events AS SELECT * FROM read_files('s3://acme-raw/legacy/events');
  2. B. CREATE EXTERNAL TABLE main.legacy.events USING DELTA LOCATION 's3://acme-raw/legacy/events';
  3. C. CREATE TABLE main.legacy.events MANAGED LOCATION 's3://acme-raw/legacy/events';
  4. D. COPY INTO main.legacy.events FROM 's3://acme-raw/legacy/events' FORMAT AS DELTA;
Reveal answer

Correct answer: CREATE EXTERNAL TABLE main.legacy.events USING DELTA LOCATION 's3://acme-raw/legacy/events';

Reference: https://docs.databricks.com/aws/en/tables/external

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✦ Consolidated Synthesis (Wiki) rev. #1 (baseline) · CC BY-SA 4.0
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Official Answer (B): CREATE EXTERNAL TABLE main.legacy.events USING DELTA LOCATION 's3://acme-raw/legacy/events';

⚓ Official Documentation Anchor: https://docs.databricks.com/aws/en/tables/external
Ranvier · DBDEA

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