Master your Power Apps interview with these top 25 questions and expert answers to boost your confidence and showcase your skills.
Power Apps is a low-code/no-code platform from Microsoft that enables users to build custom apps for business needs. It connects to various data sources and helps automate business processes without needing extensive programming skills.
Power Apps offers three main types:
Dataverse is a secure and scalable data platform used to store and manage data for business applications. It enables data storage in the form of tables (entities), supports rich metadata, and integrates seamlessly with Power Apps, Power Automate, and Dynamics 365.
| Feature | Canvas Apps | Model-Driven Apps |
|---|---|---|
| UI Control | Fully customizable | Auto-generated |
| Data Source | Any connector or Dataverse | Primarily Dataverse |
| Complexity | Simple to moderate | Complex business logic |
| Target Users | Citizen developers | Business users/enterprises |
A Gallery is a control in Canvas apps that displays data in a list or tabular format. It allows users to browse through multiple records from a data source, and you can customize how each item appears using labels, images, or buttons.
Power Apps uses a formula language similar to Excel. It supports functions for logic, data manipulation, navigation, UI behavior, and more. Some commonly used functions are If(), LookUp(), Patch(), and Filter().
Power Apps connects to data sources using connectors. There are:
Patch() is used to create or update records in a data source. It can also be used for conditional updates and form submissions where SubmitForm() isn’t flexible enough.
Syntax Example:Patch(DataSource, Defaults(DataSource), {Column1: Value1, Column2: Value2})10. What are the main advantages of Power Apps?
A Collection is a temporary, in-memory data table that stores data locally during the app session. It’s used for scenarios like storing form data before submission or for offline capabilities.
Collect() adds data to a collection but does not remove existing records.ClearCollect() clears the existing collection first, then adds the new data.Example:ClearCollect(MyCollection, [ {Name:"John"}, {Name:"Alice"} ])
Navigate() is used to switch between screens in Canvas Apps. You can pass context variables while navigating.
Example:Navigate(Screen2, ScreenTransition.Fade)
Variables are used to store temporary data. Power Apps supports:
Set())UpdateContext())Collect())Each serves different purposes based on scope and persistence.
Yes, Power Apps supports offline capabilities using collections and functions like LoadData() and SaveData() for data persistence on the device. This is mostly applicable for mobile apps.
| Feature | SubmitForm | Patch |
|---|---|---|
| Use | With forms | With or without forms |
| Simplicity | Easy to use | More control and flexibility |
| Flexibility | Limited customization | Highly customizable logic |
Controls are UI elements like Labels, Buttons, Text Inputs, Galleries, etc. They are used to build user interfaces and interact with users. Each control can be configured and bound to formulas.
Use the IfError() or Notify() function to capture and show custom error messages. You can also use Errors() function to return errors from data sources.
Example:IfError(Patch(...), Notify("Something went wrong", NotificationType.Error))20. What is the purpose of Power Apps Portals?
Power Apps Portals allow you to create external websites accessible to users outside your organization. These portals support authenticated and anonymous access, making them ideal for customer self-service, vendor portals, etc.
Data is secured using:
Yes, Power Apps can integrate with AI using AI Builder, a feature within the Power Platform. It allows users to add intelligence like form processing, prediction, object detection, and sentiment analysis without coding. These models can be trained and applied directly in apps. This enhances decision-making and user experience within business applications.
Components in Power Apps are reusable UI elements or groups of controls that can be created once and used across multiple screens or apps. They help maintain consistency in design and reduce repetitive work. Components can include logic, inputs, and outputs. This promotes modular and efficient app development.
Solutions in Power Apps are containers used to group and manage app components like apps, flows, tables, and environment variables. They are essential for organizing and transporting customizations across different environments such as development, testing, and production. Solutions support version control and dependency management, making them ideal for enterprise deployment. There are two types: Managed (for production) and Unmanaged (for development). Using solutions streamlines the Application Lifecycle Management (ALM) process in Power Platform.