• Power Query is used to transforming data, while Power Pivot is used to model data.
• Power Query is used to load data into Power BI, while Power Pivot can be used to create tables and charts.
• Power Query is used to create data models, while Power Pivot is used to analyze data models.
• Power Query is used to load data into memory, while Power Pivot can be used to generate reports from multiple sources at once without having local copies in memory or writing them out at all (the output gets copied/written out every time).

Power BI is a data analysis and visualization tool that can be helpful for businesses of all sizes. It allows users to quickly and easily create reports, charts, and dashboards that can help them understand their data in a more comprehensive way.

Some of the benefits of using Power BI include:

• It is easy to use and requires no programming knowledge.
• It provides users with a variety of powerful reporting options, including drill-down capabilities that make it easy to find specific information.
• It is versatile enough to be used for a wide range of business needs, including marketing, sales, finance, and operations.
• It can be integrated with other software applications so that it can work as part of a larger system.

When you apply general formatting to data in Power BI, you are able to make the data more readable and understandable. This can help you make better decisions by making it easier to understand the data.

Some of the benefits of general formatting include:

• It makes it easier to find specific information in the data.

• It makes it easier to compare different pieces of data.

• It makes it easier to understand how the data is related to each other.

Power BI is a data analysis and visualization tool that is used by businesses to gain insights into their data. It is currently one of the most popular tools in the market and is expected to continue growing in popularity in the future.

Some of the benefits of using Power BI include:

• It is easy to use and can be integrated with other applications such as Excel, Outlook, and SharePoint.

• It has a wide range of features that allow you to visualize your data in a variety of ways.

• It can be used to create reports, dashboards, or interactive visualizations.

• It provides bi-directional cross-filtering relationships, security, calculated tables, and Direct Query options.
• Power Pivot for Excel is able to handle a single direction relationship as well as calculated columns. Security roles cannot be defined in Power Pivot for Excel.

• Power Query helps you transform your data into numerous formats, like relational databases, databases in Excel spreadsheets, or even XML files.
• Power Pivot for tabular data modeling in Microsoft Office 365 is an analytical tool used by professionals. The Power Pivot for tabular data modeling lets you build complex queries quickly and easily. It is like the pivot table of one table in relation to other tables.
• Power Map (3D geo-spatial data visualization)
• Power View (for viewing data visualizations): With the Power View, you can use any data source and sort it by the properties that you choose.
• Power Q&A (for natural language Q&A)
• Power BI Desktop is a free tool offered by Microsoft that can be used with other Power BI products to perform data analysis and reporting. You can build advanced queries, models, and reports on the desktop version.
• Power BI for Mobile - Android, iOS and Windows smartphones provides an interactive display of dashboards from your website onto your mobile device.

The three major connectivity modes in Power BI are:

Direct Query: The ability of Direct Connection allows you to create connections between Power BI reports and any valid SQL Server database. The data is not stored in Power BI; it’s stored in the SQL Server. Finally, when using Direct Connection, Power BI will only stores the metadata of the data tables included in the sources for the data query are:

• Amazon Redshift
• Azure HDInsight Spark (Beta)
• Azure SQL Database
• Azure SQL Data Warehouse
• IBM Netezza (Beta)
• Impala (version 2.x)
• Oracle Database (version 12 and above)
• SAP Business Warehouse (Beta)
• SAP HANA
• Snowflake
• Spark (Beta) (version 0.9 and above)
• SQL Server
• Teradata Database

Live Connection: The direct query and live connection methods are the same since they both do not store any data in Power BI. The results of the direct query method are not as accurate as with the method using supported data sources connected through a live connection:

• SQL Server Analysis Services (SSAS) Tabular
• SQL Server Analysis Services (SSAS) Multi-Dimensional
• Power BI Service

Import Data (Scheduled Refresh): When you open the download window for your import data, you’re actually uploading the data to Power BI. This is a heavy process because it requires your Power BI desktop to utilize all of its available memory space. You can upload as much as 1 GB of files with the third option.

• Power BI desktop: For the desktop version
• Power BI mobile app: For using the visualizations on mobile OS and share it
• Power BI services: For online SaaS

The dashboard serves as a single page, on which a variety of things are combined together to make reports. The data from the reports that make up the story is what’s actually worth writing.

The dashboard has Tiles in it. You can use them to pin your reports to the dashboard. You can click any element in the dashboard to display the report of a particular data set.

The major building blocks of Power BI are:

Datasets: Data sets are collections of data that can be gathered from various sources like SQL Server, Azure, Text, Oracle, XML, JSON, and many more. With Power BI’s GetData feature, you can easily pull data from any data source.

Visualizations: The visual aesthetic representation of data as charts, maps, or tables is known as visualization.

Reports: A report is a formal document or publication that presents a large collection of data in an organized and useful manner. Reports are an essential tool for understanding the relationships between different elements within a dataset.

Dashboards: A dashboard is a single page of data, with various tools for viewing and manipulating it. Every tab of the dashboard can be a different section, a listing of a

Tiles: They are single-block containing visualizations of a report. They allow you to distinguish your reports.

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Power BI Interview Questions and Answers

Content packs are bundles of Power BI objects like reports, dashboards, and datasets. There are two types of content packs:

Service provider content packs: Other business services providers include Google Analytics, Salesforce, etc.

User-created content packs: Users can create their content package and share it within the business.

The three major versions of Power BI are as follows:

Power BI Desktop: Enter your information and save time by using this new tool to connect and transform large amounts of data.

Power BI Premium: The premium version is intended for larger companies that have a very large capacity to store files. The data warehouse can support up to 100TB in storage capacity using 50GB of disk space. The total cost is $4,995 per month.

Power BI Pro: For a limited time, the app allows users to get their own personalized Power BI dashboard, as well as unlimited access to reports and the ability to share them with other users. You have a storage limit of 10 GB per user.

• While Power BI uses DAX for calculating columns of a table, Tableau uses MDX (Multidimensional Expressions).
• It has been proven that Tableau works better when handling large amounts of data, while Power BI has limitations and can only handle a very small number
• Tableau is more difficult to use than Microsoft Power BI.

• Page-level filters: They can be applied to different pages from those included in the report.
• Visualization-level filters: These symbols are often used for both data and calculations of visualizations.
• Report-level filters: All of this applies to the report.

• Business Users: A business user must always remain vigilant about data and will watch all the reports for useful information.
• Business Analysts: Some analysts take their computer systems as well as their analysts to work on. Data analysis requires close attention in order to capture the important information inside the reports.
• Developers: When you are building a custom application for Power BI, it is always important to include the graphics that you desire.
• Professionals: They use Power BI to check if their data is scalable, secure, and available.

Data Importing: The first thing you need to do is to import the data and prepare it for export, putting it into a staging area.

Data Cleaning: The first step in creating an interactive map is to collect data. It is necessary to clean the data after collecting them.

Data Visualization: With the release of the new Power BI Desktop, users can now bring in data from external sources to create reports and dashboards and enhance the graphical representation of data.

Save and Publish: Once your report is ready to use, it can be published to any site for use by users of all kinds, through the internet or mobile devices.

• PowerBI can manage a lot of data.
• Information can be visualized using powerful templates and visualizations.
• They get cutting-edge intelligence technology and powerful algorithms that are updated on a regular basis.
• Users can have their own customized dashboards that are accessible and understandable.
• Users can perform queries on DAX reports.

• SUM, MIN, MAX, AVG, COUNTROWS, DISTINCTCOUNT
• IF, AND, OR, SWITCH
• ISBLANK, ISFILTERED, ISCROSSFILTERED
• VALUES, ALL, FILTER, CALCULATE,
• UNION, INTERSECT, EXCEPT, NATURALINNERJOIN, NATURALLEFTEROUTERJOIN,
• SUMMARIZECOLUMNS, ISEMPTY,
• VAR (Variables)
• GEOMEAN, MEDIAN, DATEDIFF

Syntax: Syntax is the formula that comprises the functions. If the syntax of your program isn’t correct, it will result in an error.

Functions: Functions have the capability of performing an action. It is better to calculate the proper order for carrying out a function.

Context: Row context is typically used when the result needs to be filtered, such as when a function is applied against it. There are two main types of context: Filter Context and Row Context. In this case, Row Context is being used. The FilterContext object contains the query string and filter functions, which allows you to apply different kinds of filters at the same time.

The CALCULATE function is used to determine the sum of a column from any table. A set of filters can be applied to calculate another value, rather than determining if only one or more conditions are true or not true for each cell.

Syntax:

CALCULATE ( [, [, [, … ] ] ] )

Expression: The expression to be evaluated.

Filter: A boolean (True/False) expression or a table expression that defines a filter.

SUMMARIZE()

• Main groupby function in SSAS.
• If you’d like to list the columns but not include the metrics, use the ADDCOLUMNS function.

SUMMARIZECOLUMNS

• New group by function for SSAS and Power BI Desktop; more efficient.
• Specify group by columns, table, and expressions.

• Load to a table in a worksheet.
• Load to the Excel Data Model.

The 3 edit interaction options are Filter, Highlight, and None.

Filter: It filter a visual/tile on the basis of filter selection of another visual/tile.

Highlight: It remove everything but the related elements on a visual/tile.

None: It ignores the filter selection made by another tile/visual.

Below are some examples of how you can integrate SSRS with Power BI:

• You can pin charts and other Power BI report items on the dashboard.
• Clicking the tile of a dashboard brings the user to the SSRS report in Power BI.
• A subscription has been created in order to refresh the dashboard tile.
• Power BI reports will soon be available through SSRS.

We’ve compiled a list (with answers) for each Power BI Interview Question so that there is no need to memorize them all! This is to say that there May be additional questions that we did not cover, so do feel free to comment away if you have a question about certain ones.

Let us know your thoughts on this article, any ideas for improvement, or anything else you think would benefit the community through the comments below.