Introduction The word Pipeline in general triggers a connections like image in our mind. Well data pipelines are no differ from that. These days organizations/institutions have huge volume of data which are generated through various sources, these data are known as ”Big Data”. For processing these big data efficiently such that it saves time and improves results we require data pipeline.Data pipelines are created for ETL process, where data is collected from various sources, it is then transformed into desired format and finally stored. What is DAG? DAG stands for Directed Acyclic Graph. In apache airflow DAGs represents a workflow of task that we program in python. According to the task flow that we desire the graph is made.It can be visualized from the UI as well. The priority of task is given by upstream task and downstream task.Task in DAG can be anything i.e request data from API, transforming in desired format, storing data in database and many more. What is API...