Apache Airflow workflows are defined using a DAG file, which is defined using a python script. What are some common best practices associated with writing DAGs?

i$.$ Use operators to write code such as python scripts and SQL queries within the DAG.

ii$.$ Define your task dependencies at the end of your DAG file.

iii. Ensure you have a default$\_$args dictionary, including information on your pipeline configuration.

iv$.$ Use the $">>"$ or $"<<"$ instead of the set$\_$upstream$()$ or set$\_$downstream$()$ functions to set up task dependencies.