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When designing a Heroku application, which two approaches observe the Twelve-Factor methodology? Choose 2 answers.

When designing a Heroku application, which two approaches observe the Twelve-Factor methodology? Choose 2 answers.
A . On deployment, Heroku fetches and installs any dependencies that are missing according to the application’s list of dependencies
B . On startup, the application’s source code fetches and installs any dependencies that are missing according to the application’s list of dependencies.
C . The application’s database configuration is stored in the application’s Profile
D . The application’s database configuration is stored in the application’s config vars.

Answer: A,D

Explanation:

https://devcenter.heroku.com/articies/heroku-connect-database-tables#encrypted-strings

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