QUESTION: 5

HOTSPOT (Drag and Drop is not supported)
You have two Azure SQL databases that contain the same tables and columns.
For each database, you create a query that retrieves data from a table named Customer.
You need to combine the Customer tables into a single table. The solution must minimize the size of the data model and support scheduled refresh in powerbi.com.
What should you do? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
Hot Area:

See Explanation section for answer.

Answer(s): A

Explanation:

Box 1: Append Queries as New
When you have additional rows of data that you'd like to add to an existing query, you append the query.
There are two append options:
* Append queries as new displays the Append dialog box to create a new query by appending multiple tables.
* Append queries displays the Append dialog box to add additional tables to the current query.
Incorrect: When you have one or more columns that you'd like to add to another query, you merge the queries.
Box 2: Disable loading the query to the data model
By default, all queries from Query Editor will be loaded into the memory of Power BI Model. You can disable the load for some queries, especially queries that used as intermediate transformation to produce the final query for the model.
Disabling Load doesn't mean the query won't be refreshed, it only means the query won't be loaded into the memory. When you click on Refresh model in Power
BI, or when a scheduled refresh happens even queries marked as Disable Load will be refreshed, but their data will be used as intermediate source for other queries instead of loading directly into the model. This is a very basic performance tuning tip, but very important when your Power BI model grows bigger and bigger.

Reference:

https://docs.microsoft.com/en-us/power-query/append-queries
https://radacad.com/performance-tip-for-power-bi-enable-load-sucks-memory-up

Reveal Solution Next Question

QUESTION: 6

DRAG DROP (Drag and Drop is not supported)
In Power Query Editor, you have three queries named ProductCategory, ProductSubCategory, and Product.
Every Product has a ProductSubCategory.
Not every ProductsubCategory has a parent ProductCategory.
You need to merge the three queries into a single query. The solution must ensure the best performance in Power Query.
How should you merge the tables? To answer, drag the appropriate merge types to the correct queries. Each merge type may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.
NOTE: Each correct selection is worth one point.
Select and Place:

See Explanation section for answer.

Answer(s): A

Explanation:

Box 1: Inner
Every Product has a ProductSubCategory.
A standard join is needed.
One of the join kinds available in the Merge dialog box in Power Query is an inner join, which brings in only matching rows from both the left and right tables.
Box 2: Left outer
Not every ProductsubCategory has a parent ProductCategory.
One of the join kinds available in the Merge dialog box in Power Query is a left outer join, which keeps all the rows from the left table and brings in any matching rows from the right table.

Reference:

https://docs.microsoft.com/en-us/power-query/merge-queries-inner https://docs.microsoft.com/en-us/power-query/merge-queries-left-outer

Reveal Solution Next Question

QUESTION: 7

You are building a Power BI report that uses data from an Azure SQL database named erp1.
You import the following tables.
You need to perform the following analyses:
-Orders sold over time that include a measure of the total order value
Orders by attributes of products sold
The solution must minimize update times when interacting with visuals in the report.
What should you do first?

From Power Query, merge the Order Line Items query and the Products query.
Create a calculated column that adds a list of product categories to the Orders table by using a DAX function.
Calculate the count of orders per product by using a DAX function.
From Power Query, merge the Orders query and the Order Line Items query.

Answer(s): D

Reveal Solution Next Question

QUESTION: 8

You have a Microsoft SharePoint Online site that contains several document libraries.
One of the document libraries contains manufacturing reports saved as Microsoft Excel files. All the manufacturing reports have the same data structure.
You need to use Power BI Desktop to load only the manufacturing reports to a table for analysis.
What should you do?

Get data from a SharePoint folder and enter the site URL Select Transform, then filter by the folder path to the manufacturing reports library.
Get data from a SharePoint list and enter the site URL. Select Combine & Transform, then filter by the folder path to the manufacturing reports library.
Get data from a SharePoint folder, enter the site URL, and then select Combine & Load.
Get data from a SharePoint list, enter the site URL, and then select Combine & Load.

Answer(s): A

Reveal Solution Next Question

Free PL-300 Exam Braindumps (page: 3)

QUESTION: 5

Explanation:

Reference:

QUESTION: 6

Explanation:

Reference:

QUESTION: 7

QUESTION: 8

PL-300 Exam Discussions & Posts