Show me Problem $2.$ Given the following relation:

AppSales$($AppID$,$ AppName, DeveloperID, DeveloperName, DeveloperCountry, PlatformID, PlatformName, ReleaseDate, Price, UnitsSold$)$

Assumptions:

$$ Each app has a unique ID$,$ which is used across platforms. AppName may not be unique.

$$ Each app has one and only one developer. Each developer has a unique ID and unique country. Different developers may have the same name. One developer may have many apps.

$$ Assume each app can be released to different platforms, which are identified by PlatformID. One app$$s release times and prices on different platforms can be different.the steps to solve