Beginning PowerApps – Tim Leung [PDF]

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Beginning PowerApps – Tim Leung

PowerApps supports a wide range of data sources through its built-in data connectors. But what if we want to access data sources that are not natively supported – is this possible? The answer is yes. By building a custom data connector, we can connect to any data source that is accessible through a web service. And if our required data source doesn’t include a web service interface, we can overcome this by building our own web service (although this falls outside the scope of this book).

For non-developers, however, this topic can involve lots of confusing jargon. This includes words such as Restful services, JSON, and Swagger. To make this task as simple to understand as possible, we’ll walk step by step through a practical example of how to call a postcode lookup service. The purpose of this exercise is to provide a means for users to enter data more quickly and easily. By the end of this chapter, you’ll be able to apply the same techniques to add similar valuable features to your apps.