Exam PL-100 topic 2 question 2 discussion

Out of the provided options, the two data stores you can use to achieve this functionality are: Collection (C): Collections are in-memory data structures within a canvas app. They can hold a table of data loaded from the external data source. Once loaded, the collection can be accessed and referenced from all screens within the app. This reduces the need to repeatedly retrieve data from the external source. Global variable (B): Global variables are another option for storing data accessible across all screens. However, unlike collections, global variables can only hold a single value at a time. If you need to store a table of data, a collection is the better choice. So the correct answers are C. collection and B. global variable.

B. Global variable C. Collection

You can use environment variables, but this would take quite a significant amount of development to maintain sync and will be considerably slower. BC correct

Theoretically you can also use an environment variable, but it would be an overkill in this case, because you need the data only in your application. The environment variable would make it available for the whole environment, which in this case would be totally unnecessary.

B. global variable and C. collection https://learn.microsoft.com/en-us/power-apps/maker/canvas-apps/working-with-data-sources https://learn.microsoft.com/en-us/power-apps/guidance/planning/where-is-data

B&C = Global variable and Collection

global variables can store a table.. does that make it a valid option?

Environment Variables are only needed when exporting solutions to a different environment

C seems to be clear. D shoul not be correct. Also the Description say, don't use Environment Variables. I can't imagine in which way an Environment Variable can help caching retrieved data localy. B seems to be useful. Data can be loaded into a Variable that is globally available within the App (and within the the current session of a specific user).

After going through some information, I also agree it is C and D as environment variables allow for queries of the data source less than a direct connection. The global variable here has not much use

There is no reference to exporting the app/solution, therefore Global Variable & Collection

Global Variable & Collections

Is that right? There is "You need to reduce the number of times that the app must retrieve data from the data source.".Global variable will retrieve data from the data source, and Collections and Environment not. [Use environment variables in solutions - Power Apps | Microsoft Docs](https://docs.microsoft.com/en-us/power-apps/maker/data-platform/environmentvariables)

I agree it is B and C

Global Variable & Collections

they didn't say that we are speaking about multiple environment, they asked if we have a canvas app with different screen so one environment. It must be Global variable so B & C