DATA ENGINEERING ASSOCIATE WITH DATABRICKS EXAM WITH GUARANTEED ACCURATE ANSWERS

DATA ENGINEERING ASSOCIATE WITH
DATABRICKS
DATA ENGINEERING ASSOCIATE WITH DATABRICKS EXAM WITH GUARANTEED
ACCURATE ANSWERS




What is done with the control plane? - ACCURATE ANSWERS✔✔
web application
notebooks
jobs
cluster management


What is done with the data plane? - ACCURATE ANSWERS✔✔
spinning up clusters
data processing
accessing data sources

,SQL: Create table with specific columns - ACCURATE ANSWERS✔✔
CREATE TABLE students (id INT, name STRING)


SQL: Insert data - ACCURATE ANSWERS✔✔ INSERT INTO students
VALUES (1, "Omar")


Does ACID guarantee inserting many records in a single transaction? -
ACCURATE ANSWERS✔✔ Yes


SQL: Update record - ACCURATE ANSWERS✔✔ UPDATE students
SET value = value + 1
WHERE name LIKE "T%" // starts with T


SQL: Delete record - ACCURATE ANSWERS✔✔ DELETE FROM
students
WHERE value > 6


// Boolean is lowercase
// equals is single =


What is upsert? - ACCURATE ANSWERS✔✔ Allows updates, inserts
and other manipulations in a single command

, SQL: Merge for CDC - ACCURATE ANSWERS✔✔ MERGE INTO
students b
USING updates u
ON b.id=u.id
WHEN MATCHED AND u.type = "update"
THEN UPDATE SET *


THEN INSERT *
WHEN NOT MATCHED AND
THEN DELETE


Which metastore does databricks use by default? - ACCURATE
ANSWERS✔✔ Hive


SQL: See details about Delta table including number of files -
ACCURATE ANSWERS✔✔ DESCRIBE DETAIL students


What does OPTIMIZE do? - ACCURATE ANSWERS✔✔ Replace
existing data files by combining files and rewriting results


SQL: OPTIMIZE - ACCURATE ANSWERS✔✔ OPTIMIZE students
ZORDER BY id