Interview Questions.

Question 1. What Are The Parts Of Microsoft Self-service Business Intelligence Solution?

Answer :

Microsoft has two parts for Self-Service BI:

Excel BI Toolkit - It allows consumer to create interactive file through importing records from distinct resources and version information accorequirement.
Power BI - it's miles the net answer that enables you to percentage the interactive reports and queries which you have created the usage of the Excel BI Toolkit.
Question 2. What Is Power Bi.?

Answer :

Power BI is a cloud-based totally facts sharing environment. 

Once you have developed reviews (or displays, if you select to name them that) using energy question,PowerPivot and Power View, you will possibly need to percentage your insights with your colleagues. This is where Power BI enters the equation. Power BI, which technically is an issue of SharePoint online, helps you to load Excel workbooks into the cloud and share them with a delegated group of co-workers. Not handiest that, but your colleagues can interact together with your reports to apply filters and slicers and to focus on statistics.

They are finished by using Power BI—a easy manner of sharing your analyses and insights on PCs and cellular devices from the Microsoft cloud.

Power BI capabilities that will let you:

Share presentations and queries along with your colleagues.
Update your Excel report from records resources that can be on-website or inside the cloud.
Display the output on multiple gadgets. This includes PCs, capsules, and HTML five-enabled cellular devices that use the Power BI app.
Query your statistics using natural language processing .
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Question 3. What Are The Different Excel Bi Add Ins?

Answer :

Power Query—locate, edit and load external statistics
PowerPivot—for data modeling for analysis
Power View—design visually and interactively reports
Power Map—show insights on 3D Map
Question four. Which Language We Use For Calculated Column/calculated Field In Power Pivot.?

Answer :

DAX(Data Analysis eXpression)

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Question 5. What Is Xvelocity In-memory Analytics Engine Used In Power Pivot?

Answer :

The predominant engine behind power pivot is the xVelocity in-reminiscence analytics engine.

It can manage large amount of records because it shops records in columnar databases and in memory analytics which results in faster processing of records because it hundreds all records to RAM memory.

For nice end result use sixty four bit working machine as 64 bit can  load greater records to RAM.

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Question 6. What Is Power Pivot Data Model?

Answer :

Data Model in Power pivot is made from tables, columns, records kinds, and table family members.Typically information tables are built to hold records for a enterprise entity.

Question 7. What Is Dax.?

Answer :

To do primary calculation and information analysis on facts in energy pivot we use Data Analysis Expression (DAX).It is formula language to compute calculated column and calculated subject. 

Dax works on column values
Dax can not modify or insert statistics
We can calculate calculated column and measures but we can not calculate rows the use of dax     
Sample DAX components syntax:

For the degree named Total Sales, calculate (=) the SUM of values inside the [SalesAmount ] column within the Sales desk.

A- Measure Name

B-  identical signal - indicate starting of formula

C- DAX Function

D- Parenthesis for Sum Function

E- Referenced Table

F- Referenced column name

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Question 8. What Is Power Query.?

Answer :

Power query is a ETL Tool used to shape, easy and transform data using intuitive interfaces without having to apply code.

Import Data from wide range of supply from files to databases , huge statistics to social media
Join and append statistics from a couple of statistics assets 
Shape statistics as consistent with requirement by way of putting off and including facts.
Question nine. Which Language Is Used In Power Query?

Answer :

A new programming language is utilized in energy question known as M-Code. It is simple to use and similar to other languages. M-code is case sensitive language.

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Question 10. What Is Power Map?

Answer :

At present Power Map is most effective to be had as Excel Add-in, using this we can visualize information on 3-d map.

Power Map is an Excel upload-in that offers you with a powerful set of equipment that will help you visualize and gain perception into huge units of data which have a geocoded aspect. It can help you produce 3-d visualizations via plotting up to a million records points within the shape of column, warmness, and bubble maps on top of a Bing map. If the information is time stamped, it could additionally produce interactive perspectives that display how the data adjustments over area and time.

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Question eleven. What Are The Primary Requirement For A Table To Be Used In Power Map.?

Answer :

For a facts to be ate up in energy map there need to be area statistics like:

Latitude/Longitude pair
Street, City, Country/Region, Zip Code/Postal Code, and State/Province, which may be geolocated by using Bing
The primary requirement for the table is that it carries unique rows. It ought to also contain place information, which may be inside the shape of a Latitude/Longitude pair, although this is not a demand. You can use address fields instead, such as Street, City, Country/Region, Zip Code/Postal Code, and State/Province, which can be geolocated through Bing.
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Question 12. What Are The Data Destination For Power Queries?

Answer :

There are  vacation spot for output we get from strength question:

Load to table in a worksheet or 
Load to the Excel Data Model
Power Query gives you two picks for wherein the output  of a question may be loaded: a desk in a worksheet or the Excel Data Model.

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Question thirteen. What Is Power Bi Designer?

Answer :

It is  a stand on my own software where we will make Power bi reviews after which upload it to Powerbi.Com, it does not requires excel.
Actually it's far a aggregate of Power query, Power Pivot, and Power view.

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Question 14. Can We Refresh Our Power Bi Reports Once Uploaded To Cloud (sharepoint Or Powerbi.Com)?

Answer :

Yes we will refresh our reports through Data Management gateway(for sharepoint) and PowerBI Personal gateway.

Question 15. What Is Data Management Gateway And Powerbi Personal Gateway.?

Answer :

Data Management Gatway is a software that's installed on source records machines so that reviews deployed on sharepoint can scheduled to automatic refresh

Similarly PowerBI Personal Gateway is for reports which might be deployed on Powerbi.Com

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Question 16. What Is Power Bi ?

Answer :

It is a natural language statistics querying wherein we are able to immediately plot fee through simplying typing question on facts set like:

Total income through year and area:

It is availabe only whilst reports are published to colud (Powerbi.Com or sharepoint)

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Question 17. What Are The Main Difference Between Older Power Bi And Newer Power Bi?

Answer :

New energy bi have new designing tool known as Power BI Desktop that's a stand alone fashion designer for power bi which in again-quit consist of Power view,Power-pivot and strength query

wherein as older excel model have energy bi  upload ins for excel (electricity view , energy pivot, strength query and strength map )

And there are greater graphs available in new edition of electricity bi like combination chart, line place chart, water fall, tree map and many others.

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Question 18. Can We Have More Than One Active Relationship Between Two Tables In Data Model Of Power Pivot?

Answer :

No we cannot have more than one active relationship among two desk, but we can have multiple relationship among  tables however there can be handiest one active relationship and plenty of inactive relationship as proven underneath dotted strains are inactive and continuous line as lively.

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Question 19. For Which Platform Power Bi App Is Available?

Answer :

Android Mobile
iPhone  and iPad
Windows Desktop and Windows Tablets
Windows Phone
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