Databricks Databricks-Certified-Data-Analyst-Associate Exam Syllabus Topics:
| Topic | Details |
|---|
| Topic 1 | - Data Visualization and Dashboarding: Sub-topics of this topic are about of describing how notifications are sent, how to configure and troubleshoot a basic alert, how to configure a refresh schedule, the pros and cons of sharing dashboards, how query parameters change the output, and how to change the colors of all of the visualizations. It also discusses customized data visualizations, visualization formatting, Query Based Dropdown List, and the method for sharing a dashboard.
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| Topic 2 | - Analytics applications: It describes key moments of statistical distributions, data enhancement, and the blending of data between two source applications. Moroever, the topic also explains last-mile ETL, a scenario in which data blending would be beneficial, key statistical measures, descriptive statistics, and discrete and continuous statistics.
|
| Topic 3 | - Databricks SQL: This topic discusses key and side audiences, users, Databricks SQL benefits, complementing a basic Databricks SQL query, schema browser, Databricks SQL dashboards, and the purpose of Databricks SQL endpoints
- warehouses. Furthermore, the delves into Serverless Databricks SQL endpoint
- warehouses, trade-off between cluster size and cost for Databricks SQL endpoints
- warehouses, and Partner Connect. Lastly it discusses small-file upload, connecting Databricks SQL to visualization tools, the medallion architecture, the gold layer, and the benefits of working with streaming data.
|
| Topic 4 | - Data Management: The topic describes Delta Lake as a tool for managing data files, Delta Lake manages table metadata, benefits of Delta Lake within the Lakehouse, tables on Databricks, a table owner’s responsibilities, and the persistence of data. It also identifies management of a table, usage of Data Explorer by a table owner, and organization-specific considerations of PII data. Lastly, the topic it explains how the LOCATION keyword changes, usage of Data Explorer to secure data.
|
| Topic 5 | - SQL in the Lakehouse: It identifies a query that retrieves data from the database, the output of a SELECT query, a benefit of having ANSI SQL, access, and clean silver-level data. It also compares and contrasts MERGE INTO, INSERT TABLE, and COPY INTO. Lastly, this topic focuses on creating and applying UDFs in common scaling scenarios.
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Reference: https://www.databricks.com/learn/certification/data-analyst-associate
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Databricks Certified Data Analyst Associate Sample Questions:
Which statement about subqueries is correct?
- A. Subqueries can be used like other user-defined functions to transform data into different data types.
- B. Subqueries are not available in Databricks SQL
- C. Subqueries can be used like other built-in functions to transform data into different data types.
- D. Subqueries can retrieve data without requiring the creation of a table or view.
Reveal Solution
Discussion
Correct Answer: D 🗳️
Explanation: Only visible for TestPDF members. You can sign-up / login (it's free).
A data analyst is working on a DataFrame named dates_df and needs to add a new column, date, derived from the timestamp field.
Which code fragment should be used to extract the date from a timestamp?
- A. dates_df.withColumn( " date " , f.to_date( " timestamp " )).show()
- B. dates_df.withColumn( " date " , f.unix_timestamp( " timestamp " )).show()
- C. dates_df.withColumn( " date " , f.date_format( " timestamp " , " yyyy-MM-dd " )).show()
- D. dates_df.withColumn( " date " , f.from_unixtime( " timestamp " )).show()
Reveal Solution
Discussion
Correct Answer: A 🗳️
Explanation: Only visible for TestPDF members. You can sign-up / login (it's free).
A data analyst has been asked to use the below table sales_table to rank products within region by the sales.
Input table:
region product sales
WEST A 1880.59
EAST A 2045.99
EAST B 4583.23
WEST B 3391.19
The result of the query should look like this:
region product rank
EAST B 1
EAST A 2
WEST B 1
WEST A 2
Which query will accomplish this task?
- A. Option C
- B. Option B
- C. Option A
- D. SELECT region, product, RANK() OVER ( PARTITION BY product ORDER BY sales DESC ) AS rankFROM sales_table;
- E. Option D
- F. SELECT region, product, RANK() OVER ( PARTITION BY region ) AS rankFROM sales_table;
- G. SELECT region, product, RANK() OVER ( PARTITION BY region ORDER BY sales DESC ) AS rankFROM sales_table;
- H. SELECT region, product, RANK() OVER ( ORDER BY sales DESC ) AS rankFROM sales_table;
Reveal Solution
Discussion
Correct Answer: G 🗳️
Explanation: Only visible for TestPDF members. You can sign-up / login (it's free).
Which of the following statements about adding visual appeal to visualizations in the Visualization Editor is incorrect?
- A. Colors can be changed.
- B. Visualization scale can be changed.
- C. Data Labels can be formatted.
- D. Borders can be added.
- E. Tooltips can be formatted.
Reveal Solution
Discussion
Correct Answer: D 🗳️
Explanation: Only visible for TestPDF members. You can sign-up / login (it's free).
What describes Partner Connect in Databricks?
- A. it allows for free use of Databricks partner tools through a common API.
- B. It exposes connection information to third-party tools via Databricks partners.
- C. it allows multi-directional connection between Databricks and Databricks partners easier.
- D. It is a feature that runs Databricks partner tools on a Databricks SQL Warehouse (formerly known as a SQL endpoint).
Reveal Solution
Discussion
Correct Answer: C 🗳️
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