QUESTIONS AND ANSWERS GUARANTEE A+
✔✔How can you change "Thomas" into "Michel" in the "LastName" column in the Users
table?
A) UPDATE User SET LastName = 'Thomas' INTO LastName = 'Michel'
B) MODIFY Users SET LastName = 'Thomas' INTO LastName = 'Michel'
C) UPDATE Users SET LastName = 'Michel' WHERE LastName = 'Thomas'
D) MODIFY Users SET LastName = 'Michel' WHERE LastName = 'Thomas' - ✔✔C
✔✔What is MODE in Summary Statistics?
A) MODE in a set of numbers is the number that appears at the top
B) MODE in a set of numbers is the number that appears at the last
C) MODE in a set of numbers is the number that appears most frequently
D) MODE in a set of numbers is the number that appears in the middle - ✔✔C
✔✔Who can see all catalogs in Unity Catalog?
A) Users with the USE CATALOG permission
B) Users with the ADD CATALOG permission
C) Users with the MAIN CATALOG permission
D) Users with the DATA PERMISSION permission - ✔✔C
✔✔Other than Databricks UI, what are other ways to interact with Databricks?
A) Databricks CLI
B) All the above
C) Terraform
D) None of the above
E) Using REST API - ✔✔B
✔✔Why are ACID transactions a good thing to have?
A) ACID transactions ensure the query is always executed
B) ACID transactions ensure 'all-or-none' data execution
C) None of the above
D) ACID transactions ensure data never falls into an inconsistent state because of an
operation that only partially completes. - ✔✔D
✔✔What is the mean and median of 1,2,3,4,5
A) Mean: 5, Median: 1
B) Mean: 1, Median: 3
C) Mean: 3, Median: 5
,D) Mean: 3, Median: 3 - ✔✔D
✔✔A data analyst wants to horizontally combine two tables as part of a query. They
want to use a shared column as a key column and only want the query output to contain
rows where the value in the key column is present in both tables.
Which of the following SQL commands can they use to accomplish this task?
A) OUTER JOIN
B) LEFT JOIN
C) COPY INTO
D) INNER JOIN - ✔✔D
✔✔What are the various permission option(s) available at the database table level?
A) ALL, SELECT, MODIFY, READ_METADATA
B) None of the above
C) ALL, SELECT, MODIFY, READ_METADATA, USAGE, CREATE
D) ALL, SELECT, MODIFY, GRANT - ✔✔A
✔✔Which of the following is incorrect about how we can check if the query results were
read from the cache?
A) Under SQL Editor > Check the Run stats on the bottom of the page for Current
Execution> Hover on the run time, shows the stats
B) Under Query History > Go to the Query > Check the IO section
C) Under SQL Warehouses > Go to Query History > Check the IO section
D) Under Queries > Check in the Admin View - ✔✔D
✔✔Which join is to be used between two tables A and B when the resultant table needs
rows from A and B that matches the condition and rows from A that do not match the
condition?
A) Outer Join
B) Inner Join
C) None of the above
D) Cross Join - ✔✔A
✔✔Which layer tables are "project specific" in nature?
A) Platinum
B) Bronze
C) Gold
D) Silver - ✔✔C
, ✔✔Can you manipulate files in managed tables directly using tools outside of
Databricks?
A) Only if you have the necessary permissions
B) It depends on the file format used
C) Yes, it is recommended to use external tools
D) No, you should not use tools outside of Databricks - ✔✔D
✔✔How do you check the Query Profile for a select query run on Databricks SQL
Editor?
A) On the Query History Tab
B) On the Data Tab
C) On the SQL Editor Tab
D) On the SQL Warehouses Tab - ✔✔A
✔✔When managing data quality with Delta Live Tables, which of the following is not
considered Delta Live Tables expectations?
A) A description, which acts as a unique identifier and allows you to track metrics for the
constraint
B) An action to take when a record fails the expectation, meaning the boolean returns
false.
C) No action is taken when meaning the boolean returns true.
D) A boolean statement that always returns true or false based on some stated
condition. - ✔✔C
✔✔Which of the following do we see on the Queries landing page
A) Ability to view previously run queries by different users, view query profile
B) Ability to create query, list saved queries, filter queries, change workspaces, link to
databoard
C) Ability to create query, list saved queries, filter queries, My queries, trash and Admin
view
D) Queries, Run date, Run Duration of query, SQL warehouse and user who ran the
query - ✔✔C
✔✔Which of the following statement is TRUE about the DISTINCT Clause?
A) It can be used with aggregate functions such as COUNT, AVG, etc.
B) It operates only on a single column.