[ TO GET HIRED ] PowerApps Interview Questions and Answers
Last updated on 18th Nov 2021, Blog, Interview Questions
PowerApps Professionals and expert trainers from ACTE systems are providing you with the important questions and answers that might be asked when you face an PowerApps Interview. These questions and answers will help you in the preparation of the interview. Questions are relevant to PowerApps and its applications. The following list includes the best important PowerApps questions for freshers as well as PowerApps questions and answers for experienced candidates to help them prepare for the interview. This complete guide of PowerApps interview questions will encourage you to crack your Job interview easily.
1. What are PowerApps?
PowerApps is a Platform as a Service. It enables you to create mobile apps that run on different operating systems, such as Windows, iOS, and Android. At its core, it is a suite of data platforms, connectors, services, and apps that offer a quick application development environment to create custom apps for the business requirements.
2. Define common data services, and why should we use them?
Common data service lets the data get integrated from different sources into one store that can be easily used in Power Automate, Power Virtual Agent, Power BI, and PowerApps. This makes the app developing experience seamless.
3. What are the types of apps that can be created in PowerApps?
PowerApps is one productivity development platform that allows us to create canvas apps, common data services, model-driven apps, and portals.
4. Is it possible to use multiple data sources in one canvas app?
Yes. With PowerApps, you can create any number of connections. Once it is done, any number of data sources can be used in one app.
5. What are the different ways to submit data from PowerApps?
This task can be executed by using two functions – Patch() and Submit form(). However, Patch() can also be used to upload partial data.
6. Can we access local network data sources in PowerApps?
Yes, we can easily connect to the local network data sources.
7. How can Error Handling be implemented in PowerApps?
To do so, first, we will have to get information about any errors through the Errors function. And then, through Validation and DataSourceInfo, some of the errors can be ignored even before they take place.
8. How is it possible to use media files in the Canvas app?
Up to 200 MB of media for each app can be uploaded in PowerApps. However, what is majorly recommended is using media/blog storage services, such as Azure Media or Azure Storage, and embed the media URL to the app.
9. What is a collection, and how can they be created?
This one is a special type of data source, which is not connected to the service of the cloud but local to the app. This is generally used as the local to the device and cannot be shared among devices for one or multiple users. Also, they can be saved as well as retrieved locally. To operate collections, Clear function, ClearCollect, and Collect can be used.
10. What is PowerApps rock?
11. How different user environments can be created in PowerApps?
An environment is referred to as the space to keep, manage and share the data, apps, and flow of the business. It can also be regarded as a container that distinguishes apps on the basis of different target audiences, security needs, and roles. However, creating or choosing the environment used basically depends upon the company and the apps you are thinking to develop.
12. How can a local or global variable be defined or used in PowerApps?
To do so, the Set function is used to set the global variable’s value. This holds an information piece temporarily, like the result of operational data or the number of times somebody has clicked a button. And then, the UpdateContext function is used to create the content variable, which holds information temporarily
13. What is the difference between a Model-driven app and a Canvas app?
|Model-driven apps use a component-based methodology to develop a significant app. They comprise various components, like dashboards, business processes, forms, charts, views, and entities that create a UI.||Canvas apps begin with user experience and enable customization interference through different UI controls, like charts, media, drop-down lists, text-input boxes, labels, and more.|
14. Is it possible to create PowerApps without gaining access to a license?
No. Neither creation nor consumption of PowerApps is possible without a license.
15. What Are The Processes Of Material Module?
All procedure of material Generate indent to issue product.
16. How Do You Pass Parameters When Opening A Window?
- Use OpenWithParm approach () and getting access to the 3 system message item properties:Message.DoubleParm
17. What Are The Different Statuses A Row Can Have In A Dw And What Function Do You Call To Find The Status?
Not Modified – the data within the row/column is unchanged from what changed into retrieved.
Data Modified – the statistics in a column or one of the columns within the row has modified since it turned into retrieved
New Modified – the row is new and values were assigned to columns. (Changes are on the whole due to person access or via using the set item () technique)
New – the row is new and values have not been particular to columns.
All are relevant to rows however most effective 1 & 2 are applicable to columns.
Getitemstatus () may be used to locate the records window reputation.
18. What Is The Purpose Of Using The Super Keyword?
It is used to refer to an object’s on the spot ancestor. Take as an example Super:: wf_myfunc (myarg1, myarg2). This example calls the ancestor characteristic wf_myfunc (probably the descendant also has a function known as wf_myfunc). This example has to be part of a script or feature in the descendent window, now not one of the window’s controls.
19. What Is A Dynamic Data Window? Give An Example Of Why You’d Need To Use A Dynamic Data Window?
It is a fact window that is changed or created in the course of runtime. The CREATE method can be used to create or update the current DW item inside the DW manipulated with the newly created DW. Settransobject () wishes to be reset with the new DW inside the control due to the fact that the sooner association would have been destroyed.
20. What is a government built with microsoft PowerApps?
21. What Is The Difference Between Item Error () And Db Error ()?
Item Error () occurs whilst the facts provided to a selected column in a table fails a few validation regulations. For example a DW column designed to just accept most effective integer values throws this error if a string price is handed. DB Error () occurs whilst INSERT/UPDATE/DELETE/RETRIEVE fails. When it happens, the DW Control throws up a message container describing the error to the DBMS. The person can also get the precise blunders code and throw up message boxes.
22. What Is A Data Store? What Type Of Events Does It Support/now not Support?
It is a non-visible statistics window. For example if you want to retrieve records from a desk without showing it, then you may pass for a statistics shop. It no longer guides clicked events but helps delete row (), insert row (), retrieve () and update (). It additionally supports Item Error () event.
23. As An Extension Of (eight) Above, Mention Two Differences With Data Windows?
A DW may be designed such that the consumer is prompted to go into the parameters for records retrieval at the same time as this is no longer viable with data stores. If the user calls the RETRIEVE method for a DW manipulate, the DW object looking ahead to a controversy, if the consumer leaves it clean, it prompts the person to go into the best value, this behaviour is not supported in facts shops.
24. Explain The Following Terms: Regeneration, Optimization & Pbd?
Regeneration – whilst you alter an ancestor object, you can regenerate descendants so that they choose up the code adjustments to the ancestor.
Optimisation – it is the procedure of squeezing library items; it gets rid of gaps in libraries and defragments the garage of items, as a result enhancing overall performance. Optimising most effectively impacts the format on disk and now not the contents of the items. Objects are not recompiled. For great overall performance libraries ought to be optimised once a week.
PBD – DW gadgets are stored in PBLs which are converted to PBDs thereby offering runtime variations of DW items.
25. Explain The Different Types Of Data Sources That Can Be Linked To Data Window Controls?
Quick Select – Used when records come from one or greater tables linked by a foreign key.
SQL Select – In addition to above grouping & computed columns can be designated
External – the records may be imported from a flat document or populated from the code. ( as an instance the use of setitem() strategies)
Query – used whilst the information supply (SQL declaration) is saved in a question item defined within the query painter.Stored Procedure
26. How The Auto Commit Property Works In Pb?
- When the Auto Commit assets is about to FALSE (default) or zero, PB troubles SQL statements within the scope of a transaction. 1(TRUE) implies statements outside the scope of a transaction (for instance while your utility calls for creating brief tables).If you want to execute stored methods containing DDL (CREATE, ALTER, DROP and so on) statements, then Auto Commit = TRUE.
- If Auto Commit = TRUE, then rollback can not be issued, it should be set to FALSE after completing the DDL operation.
- When Auto Commit is ready from FALSE to TRUE, then PB problems a COMMIT declaration by way of default.
27. Explain The Steps To Update A Multi-desk Dw In Pb?
- Use. Modify/.Item notation to make ONE desk updateable
- SET the number one keys for the desk
- Perform DW_1 replace with FALSE argument for the reset choice inside the Update() feature
- After © is successful, make 2nd table updateable and 1st desk now not updateable
- Next name update() with TRUE argument for the the reset choice inside the Update() function
- COMMIT/ROLLBACK depending on achievement or failure.
28. Is Powerbuilder Support Multiple Inheritance?
No,But you need`multiple inheritance then you could inherit one object from different and You make one item as user object and then use this user object inherited item.
29. Name Some Of The Pfc Services?
- Application (debugging, errors message, safety)
- Data window (filter, linkage, print preview, resize, sorting)
- Window (menu, resize, report, metaclass)
30. How to Using REST APIs via customers connected with PowerApps?
31. If You Were Experiencing A Gpf In Your Application, How Would You Go About Tracking It Down?
- Check library search direction in improvement, required DLLs, PBL’s in runtime and many others
- If PFC is used, test that the PB version is precisely similar to the PFC version, i.E. Five.0.04 etc
- Use DLL tracking application to test executables DLL list
- Enabling the PB Debug Tracing statistics and find the ultimate line of code that carried out previous to the GPF.
32. Explain The Concept Of Inheritance In Pb?
Descendant items – In PB, an object magnificence can be inherited from some other magnificence. The inherited or descendent object has all the instance variables, events, and features of the ancestor. You can increase the descendant through adding extra variables, activities, and features. If you change the ancestor, even after enhancing the descendant, the descendant carries the adjustments.
Instantiating – When you instantiate a descendent object, PowerBuilder also instantiates all its ancestor training. You no longer have programmatic access to these ancestor times, besides in a few confined ways, which includes when you operate the scope operator to get right of entry to an ancestor model of a feature or occasion script.
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33. Differentiate Between Parent & Parent Window?
|Parent refers to the PB object wherein the modern-day item is positioned. For example parent in a command button’s script will refer to the window wherein the command button is placed.||Parentwindow is used to refer to the window for which the present day menu is hooked up.|
34. Explain Enumerated Data Types In Pb?
Enumerated statistics kinds are precise to Power Script. They are used as arguments in capabilities and additionally to specify the properties of an item or manage. A variable of one of the enumerated information sorts may be assigned a fixed set of values. For example, the enumerated facts type Alignment, which specifies the alignment of textual content, may be assigned one of the following three values. Center! Left!, and Right.
35. Explain The Concepts Of Embedding And Linking?
When you embed an item it’s miles stored as part of the OLE box object i.E. Any adjustments to the actual item will now not replicate in the embedded object. In case of Linking the original item resides wherein it becomes and link information is saved inside the OLE container item i.E. Any changes to the real object will mirror within the OLE box object. OCX is an OLE manage that implements the thing-based structure.
36. What Is Dde? Which Pb Object Has Dde Related Events Associated With It?
DDE stands for dynamic data alternate by using which packages can talk to every different and alternate statistics between them. Examples are RemoteExec & Remote Send. A PB window has DDE occasions associated with it.
37. Explain The Different Types Of Embedded Sql That Can Be Used In Pb Scripting?
Transaction Management statements – CONNECT, COMMIT, ROLLBACK and DISCONNECT are used to control transactions in ASE. If a trigger fails, then a RAISEERROR needs to be issued within the cause and not ROLLBACK. PB has a DBMS unique return code (SQLDBCode = -1) inside the transaction item which can be used to throw messages to the consumer.
Non-cursor statements – INSERT/UPDATE/DELETE/SELECT.
Cursor statements – the user can retrieve ( declare, open, fetch & close cursors) and problem replace( replace & delete cursors).
DB Stored Procedures – they may be used for retrieve, replace or each. To execute DDL statements the AutoCommit must be set to TRUE (1), however if it’s miles TRUE, ROLLBACK can not be issued, therefore after of completion of the DDL operation it ought to be set returned to FALSE.
38. Which Has A Menu, Associated With It. For Some Reason I Have Deleted The Menu And I Am Getting Any Error While Trying To Open The Window. What Needs To Be Done?
Export the window as a SRW and search for the menu call in the report. Once determined the menu may be created once more and linked to the supply window.
39. What Is The Difference Between Trigger Event () And Post Event ()?
The former executes the required event’s script right away while the latter posts the request inside the operating machine’s message queue.
40. Define business opportunity with PowerApps?
41. How Can I Find Out If The Pr Application Is Connected To The Db Or Not?
- Use the Dbhandle () function.
42. If You Create A Response Window And Open That Window In An Mdi Frame Using Open Sheet (), What Would Happen?
When you open a window in a MDI frame using opensheet () or opensheetwithparm () the window gets the sheet properties no matter the window type. If a response window is opened using the above functions the window will behave like some other sheet having maximise, limit, close controls and so on.
43. Differentiate Between Instance And Shared Variables In Pb?
|Instance variables are created whilst the item is created and destroyed whilst the object is destroyed even as a shared variable is created while the FIRST example of the object is created and is destroyed while the software is closed.||The cost of an instance variable in every example is impartial of its cost in different times while changing the fee of a shared variable.|
44. What Are The Different Types Of Windows In Pb?
They are fundamental, popup; toddler, response, MDI body, and MDI frame with microhelp.
45. How Can You Update A Dw That Has A Stored Procedure As A Data Source?
It may be accomplished by means of going to the replace residences within the DW via selecting Rows/Update homes from the menu inside the design mode in the DW painter. The tables to be updated can be selected.
46. What Is The Event From Which I Can See The Exact Sql Statement Sent To The Db By PowerBuilder?
47. How Would You Retrieve Multiple Result Sets In A Single Dw?
DW can retrieve the most effective one end result set at a time. To retrieve different end result units, you can alternate the end result set quantity either by way of regulate () or using item notation ensuring the quantity of columns and statistics types match the prevailing DW definition.
48. If The Application Needs To Display Rows As Soon As They Are Retrieved, What Should Be Done?
Write code inside the retrieval () occasion and also set the async attribute within the DBParm assets inside the transaction item.
49. What Is The Difference Between A Computed Column And A Computed Field
The former is described as part of the SELECT announcement, (as an instance sum, avg and many others) whose values are calculated via the database, even as within the latter the PB consumer calculates the values. If it is a fat client then computed fields are advocated, else for thin clients it is computed column.
50. Define PowerApps architecture overview?
51. Explain The Following Error: “rows Changed Between Retrieve And Update”?
It happens when a user updates the records before you update it. PB detects it whilst you include the timestamp column within the DW or use “key and updatable columns” within the WHERE clause. The strategy to the problem would be to use the deselect row () feature to reselect the row that brought on the error and get the ultra-modern values for the mistake row and update the DB once more.
52. Explain The Dw Validation Rule?
If the facts in a column have changed, it checks for the correctness of the fee (both data kind and statistics cost) inside the primary buffer. Wrong information or information price will cause the ItemError () event. If the records is correct it triggers item modified () occasion, which if it returns ZERO, triggers item focus changed () event.
53. Application Functionality Would Like To Allow The User To Print Selected Rows. How Is This Done?
You can reproduction the chosen rows to a information shop or a hidden DW manipulate the use of rowscopy () and print the facts save or hidden DW control.
54. Can You Use An Array As An Argument To The Dw’s Retrieve () Function?
Yes, it may be used when your DWs data supply includes a Select declaration with an IN clause.
55. How Do You Change The Sql Statement Of A Dw At Run-time?
It may be executed by linking the DW control to regulate () feature or using “. Object” notation.
56. Explain Function Overloading With An Example?
It is a function in PB where a characteristic is defined with the equal call as some other. The functions can also range within the number of arguments and also the form of arguments. An instance is the Messagebox () function.
57. Explain The Usage Of Settransobject Function With Composite Dws?
Only this function must be used for composite presentation patterns performing as containers for other DW objects. If setTrans () is used with each DW in a composite DW then disconnect does not arise until PB session ends. It ought to be used simplest for pure retrieval when DB locks want now not be hung on tables in different words update () capabilities are not used.
58. Explain Some Performance Considerations That You As A Developer Would Like To Review While Designing Client/server (pb/sybase) Applications?
Long jogging connections – if these are NOT acceptable then the application needs to connect to the database most effectively while necessary. If ideal then COMMITs have to be issued as regularly as viable in order that the changes do in reality occur. More importantly COMMITs should be issued to launch any locks positioned on DB entities due to statements done for the duration of the transaction.
59. Mention Some Features Of N-up, Composite & Cross Tab Dw Presentation Styles?
N -Up: two or greater rows of facts displayed next to every other throughout the web page. It is beneficial for periodic statistics together with records for every day/week or every month in the area.CrossTab: affords a data precise in a row and column format. Data to be decided on from one or extra tables, DW can not be external. Crosstab functions may be used for filters, validation guidelines or computed fields
60. How Administering a PowerApps enterprise deployment?
61. What are the three core concepts of PowerApps?
Using PowerApps, you can create three types of apps: canvas, model-driven, and portal. More information: Overview of creating apps in PowerApps.
62. What are the limitations of PowerApps?
- Limitations of PowerApps.
- Licensing is constrained under the Microsoft 365 umbrella.
- A complicated licensing model.
- Low-code services.
- PowerApps integrated development environment.
- Limited support for multiple device sizes and screen orientations.
- Item limit.
- Throughput limits of the connector ecosystem.
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63. How can I improve my PowerApps performance?
- Limit data connections.
- Limit the number of controls.
- Optimize the OnStart property.
- Cache lookup data.
- Avoid control dependency between screens.
- Use delegation.
- Use Delayed Load.
- Working with large datasets.
64. What programming language does PowerApps use?
Microsoft Power Fx is the low code language for expressing logic across the Microsoft Power Platform. It is the same language that is at the heart of Microsoft PowerApps canvas apps today and is inspired by Microsoft Excel,” explained Greg Lindhorst, a Principal Program Manager at Microsoft.
65. How many types of PowerApps are there?
Two types of PowerApps: Canvas vs. Model-driven.
66. What is the Dataverse power app?
Dataverse lets you securely store and manage data that’s used by business applications. Data within Dataverse is stored within a set of tables. App makers can then use PowerApps to build rich applications that use this data
67. What is Power Automate used for?
Power Automate, formerly Microsoft Flow, is an online tool within the Microsoft 365 applications and add-ins, used for the creation of automated workflows between apps and services to synchronize files, get notifications, and collect data.
68. What does Power Automate do in SharePoint?
Use Power Automate to set up workflows for lists and libraries in Microsoft Lists, SharePoint, and OneDrive for work or school. Power Automate helps you automate common tasks among SharePoint, other Microsoft 365 services, and third-party services.
69. What is the loading spinner in PowerApps?
Loading Spinner in PowerApps is an animated element that helps to indicate loading is in process. When the loading data is slow, in that case, the loading spinner will appear. This means, it helps to let the user know that the process is in busy mode and it may take some time to appear.
70. What is MS PowerApps Power Automate Consulting?
71. How do I cache data in PowerApps?
To use this option, go to https://make.PowerApps.com > Apps > Select your Portal app click Settings and click Administration: On the left menu click on Portal Actions and click the Restart option: This will restart the website app service and clear the server-side cache.
72. What is delay output in PowerApps?
With DelayOutput set to true, there is a second delay before the changes are detected. This is done to give you time to finish typing what you want. The delay works well when used to aid the TextInput.
73. What is a canvas app in PowerApps?
Canvas apps are exactly what they sound like: PowerApps provides you with a blank canvas onto which you can drag and drop components in any formation to design a user interface. When you’re satisfied with your design, you can connect it to one or more data sources using basic, Excel-style formulas.
74. How do you code an app for power?
- Go to PowerApps Studio.
- Create a new canvas app, or edit an existing app to which you want to add the code component.
- On the left pane, select Add (+), and then select Get more components.
- Select the Code tab, select a component from the list, and then select Import.
75. What is the difference between canvas and model-driven PowerApps?
|Canvas App is an AppModule enabling users to design and develop task-specific apps with designing flexibility.||Model-Driven Apps is an AppModule enabling users to design and develop component-focused apps to implement an end-to-end business process.|
76. What code is used in power automation?
77. What language is power automation?
Power Automate Desktop (PAD), a RPA software for automating graphical user interfaces (via the acquisition of Softomotive in May 2020). This product uses a Robin Script based language to achieve RPA. Power Virtual Agents, software for writing chatbots.
78. Can Power Automate send emails?
Here are the top how-to scenarios about email in Power Automate, with examples of how to achieve them: Send a beautifully formatted email. Add an image to your email. Send email to a distribution list.
79. What is the difference between Power Automate and PowerApps?
Microsoft PowerApps is primarily an interface design tool for forms, while Microsoft Power Automate is a workflow and process automation tool. They’re individual products but can be combined.
80. Why PowerApps is used?
81. What could be the most convenient way of using a PowerApps app inside office premises?
Adding the app to Teams can help increase accessibility.
82. You are building a canvas app. With the changes suggested by the client, the app screens keep on increasing. How can you re-use the configurations that you have used within a canvas app?
Use a test screen. Add all the types of controls that you are using in the app. Configure the properties as per requirement and re-use them in the other screens in the app.
83. As a consultant, when can you choose Model-driven apps over Canvas apps?
When the data can be handled with Dataverse defined tables, model-driven apps can be an easier option to implement a solution.
84. Does the use of more and more connections in an app degrade the performance?
Yes, we can say that. For eg: If we want to capture the details of an employee using an Office 365 connection, it can be a better choice to use a collection and store the details rather than using the connection every time when a piece of info is needed.
85. What is the purpose of using the SaveData() function?
SaveData() is used to store a collection under any alias name that can be used later in the app.
86. Can you share a canvas app with external business partners and contractors?
Using Azure AD B2B external collaboration for the tenant, guest users can be invited to use the app.
87. In a collaborative environment, how can you ensure the versioning of a canvas app when there are regular updates rolled out?
While saving the app, a version-specific note or comment can be left. Also, we can use a label on the Home screen of the app representing a version number that can be maintained manually by the app maker.
88. What is the difference between IsMatch, Match and MatchAll functions in PowerApps?
The IsMatch function is used to test if a string matches a pattern, generally with a regular expression, and returns True or False. The Match function returns the first record that matches a pattern. The MatchAll function returns a table for every match found.
89. Why is the Patch function used in canvas apps?
Patch function is used to add or modify records in a data source.
90. How to build your own internal PowerApps?
91. How many apps can use the same table in PowerApps?
the same table on as many apps you need. Each app needs a connection to this table. To assure a sync between local data on each app and datasource there is a function Refresh(database) that can be called based on a timer control.
92. When should you not use PowerApps?
- Hidden/Rising Costs.
- Absence of Smartphone Features.
- Lack of Security Control.
- Steep Learning Curve.
- Sub-Standard Offline Capability.
- Limited Integration.
93. How do you wait for the power to automate?
Use these wait conditions when you need to delay processing in your flows until a particular condition is met. Postpone triggering the flow and the first action until a specific time. To learn more, go to Wait condition using Postpone Until. Add a fixed delay before the next step.
94. Is there a wait function in PowerApps?
Using timer control we can add delay in the actions in PowerApps. We need to set a few properties of this Timer control like: Duration – the value needs to be provided in milliseconds. This will decide how long the timer will run.
95. How do I save an attachment in PowerApps?
- Select the forms that you want to add attachments to.
- In the properties pane, click on the Data field to open the data panel.
- In the list of fields, find the Attachment field and enable it.
- Save and publish your app.
Then, to enable attachments you need to: