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In this blog for Power BI, we will be discussing top questions to help you with your interview. Power BI was released in 2013 where Microsoft decide to combine multiple Excel add-ons together to create a completely independent tool. This tool is taken as the major contributing factor in the growth of Microsoft in BI or data visualization domain. Before you read this blog, it would be great if you can brush up the Power BI basics first. So, let us focus on a list of popular Power BI questions that are frequently asked by interviewers.
There are two major parts of self-service BI solutions. These are –
SSBI is a powerful approach to data analytics that enables business users to analyze, segment, or filter data without any deeper knowledge of the statistical analysis and the BI. With SSBI, this is always easy to access or visualize the data for better business insights. Also, SSBI approach helps users in creating powerful intuitive business reports and shareable dashboards too.
This is a cloud-based data sharing environment where anyone can visualize or analyze data with great efficiency, speed, and understanding. It also helps in creating easy to use dashboards, interactive dashboards, compelling visualizations etc.
Power BI desktop is a free application that can be installed on to your computer and used on cohesion with Power BI for advanced Data exploration, data modeling, report generation, data shaping and more. It allows you to store complete data in a single file that can be further shared with other users.
These are the files, content packs, and connector etc. that can be quickly connected with the Power BI. Data is usually imported from multiple sources like Excel, CSV files, or desktop files etc.
The building blocks or we can say components in Power BI could be given as – Visualizations, datasets, Reports, Dashboards, or Tiles etc.
Filters in Power BI are majorly divided into three major categories that are discussed below –
Content packs are pre-built solutions that can be connected with Power BI to see the data or reports live through dashboards
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With the help of Excel BI toolkit, you could always create highly interactive reports by multiple range of sources and model data based on requirements.
Both Power BI and Power BI desktop are free of cost. At the same time, Power BI pro demand for $9.99 subscription once the 60-days trial is complete.
Power BI is a powerful tool for analyzing or sharing the data in a completely new way. This is available free of costs to complete the basic data analysis work.
On the other hand, Power BI pro has more additional like scheduling data, refreshing them on daily basis, more interactivity, and excellent storage capacity etc. Power BI pro demand for $9.99 subscription once the 60-days trial is complete.
Tableau and Power BI are both data management tools with solid footprints in the Business Intelligence domain. Power BI by Microsoft is much younger than Tableau but taken as a close competitor to Tableau in 2018. Both have their own pros and cons, they can be used as per the requirement.
Difference Between Power BI and Tableau | ||
Features | Power BI | Tableau |
Best Use Case | Dashboards | Ad-hoc Analysis |
Best User | Average Joe/Jane | Analysts |
Data Established | 2013 | 2003 |
Infrastructure | SaaS Only | Any |
Investment Required | Low | High |
Licensing | Rigid | Flexible |
Overall Functionality | Very Good | Very Very Good |
Performance With Large Datasets | Good | Very Good |
Support Level | Low (Or Through Partner) | High |
For using Power BI, you must have a web browser and work email address. Any email address ending with .gov and .mil are not supported currently.
The tool will not support email addresses as given by the telecommunication providers, so you should always signup with a work email only.
Two supported email extensions by Power BI include .org and .edu etc.
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Yes, Power BI gives extensive support to mobile devices too like IOS, Windows 10, or Android etc. The Power BI apps are available from multiple sources to download like Google Play, Windows Store, and Apple Store etc.
These are Power Query, Power Pivot, Power View, and Power Map etc. Let us discuss them one by one in brief below –
To get started with, there are multiple options available and you can choose any of them like –
It can be purchased from the official site of Power BI or you can take help from Microsoft assistance to complete the process.
No, this is not possible to access Power BI services on private or internal service cloud. However, with the help of Power BI desktop, you can always connect with the on-premise data sources.
This is DAX (Data Analysis Expression) language that can be used to calculate the number of columns in Power Pivot.
This is formula language to find the calculated fields or columns. It is generally required for the basic data analysis and calculation in Power Pivot. The language supports column values but it is not able to modify or insert values. Also, we cannot use DAX for calculating row values.
This is a model that is made up of data types, tables, table relations, or columns etc. These data types are generally programmed to store data for multiple business entities.
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This is an ETL tool for shaping, cleaning, or transforming data into meaningful insights and intuitive interfaces too without any code.
This is M-code programming language that is easy to use and highly case -sensitive too.
There are two data destinations that are used with Power Query. These are –
He is the person who is responsible for designing power BI apps and upload the same to the Power BI official site. There is no requirement for Excel in that case. This is a perfect combination of the Power Query, Power View, and the Power Pivot etc.
Yes, this is possible to refresh the data reports that are uploaded to the cloud. You could take help from data management gateway and Power BI person gateway for the same.
Power BI personal gateway is required to see reports that are deployed to official power BI site. At the same time, data management gateway is an application that is installed into data machines to help the reports to deploy on SharePoint and access them with an automatic update.
The newer version has more powerful features and it is famous with the name Power BI desktop. This is a standalone designer using Power Query, Power View, and the Power Pivot in the backend. At the same time, older Power BI has multiple add-ins for Excel and graph features are also available for better visualizations.
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