Controlling what data is sent to a user’s device and security options
As we discussed in Chapter 2, the data in the data source (typically a spreadsheet) will be sent to user devices, such as PCs and mobile phones, when users access the app. When the app users log into the app, the app will first read all the data the app is using from the data source and get that data on the devices the app users are using to access the app. In this case, all the rows in the data sources are sent to user devices without exception. This is pretty much the default behavior of AppSheet. If we imagine tables that have thousands or millions of rows, it will naturally take some time to get the data from the source to the user devices, which will slow down the app’s performance due to the high volume of data the app needs to deal with.
We have a solution to improve your app performance, which is by applying conditions specifying which rows will be sent to user devices through the Security...
