Databricks certsexpert download Full Version Databricks-certified-data-engineer-associate Exam by Hasan q27 vce pdf

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Exam Name:	Databricks Certified Data Engineer Associate Exam
Exam Code:	Databricks-Certified-Data-Engineer-Associate Dumps
Vendor:	Databricks	Certification:	Databricks Certification
Questions:	230 Q&A's	Shared By:	hasan

Question 24

A data engineer needs to apply custom logic to string column city in table stores for a specific use case. In order to apply this custom logic at scale, the data engineer wants to create a SQL user-defined function (UDF).

Which of the following code blocks creates this SQL UDF?

Options:

Discussion

Question 25

A data engineer needs to optimize the data layout and query performance for an e-commerce transactions Delta table. The table is partitioned by " purchase_date " a date column which helps with time-based queries but does not optimize searches on user statistics " customer_id " , a high-cardinality column.

The table is usually queried with filters on " customer_i

d " within specific date ranges, but since this data is spread across multiple files in each partition, it results in full partition scans and increased runtime and costs.

How should the data engineer optimize the Data Layout for efficient reads?

Options:

Alter table implementing liquid clustering on " customerid " while keeping the existing partitioning.

Alter the table to partition by " customer_id " .

Enable delta caching on the cluster so that frequent reads are cached for performance.

Alter the table implementing liquid clustering by " customer_id " and " purchase_date " .

Discussion

Question 26

Which of the following describes the storage organization of a Delta table?

Options:

Delta tables are stored in a single file that contains data, history, metadata, and other attributes.

Delta tables store their data in a single file and all metadata in a collection of files in a separate location.

Delta tables are stored in a collection of files that contain data, history, metadata, and other attributes.

Delta tables are stored in a collection of files that contain only the data stored within the table.

Delta tables are stored in a single file that contains only the data stored within the table.

Discussion

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Question 27

A new data engineering team team. has been assigned to an ELT project. The new data engineering team will need full privileges on the database customers to fully manage the project.

Which of the following commands can be used to grant full permissions on the database to the new data engineering team?

Options:

GRANT USAGE ON DATABASE customers TO team;

GRANT ALL PRIVILEGES ON DATABASE team TO customers;

GRANT SELECT PRIVILEGES ON DATABASE customers TO teams;

GRANT SELECT CREATE MODIFY USAGE PRIVILEGES ON DATABASE customers TO team;

GRANT ALL PRIVILEGES ON DATABASE customers TO team;