Productiva IT Solutions Software Developer Interview Questions, Process, and Tips

Airflow is an open-source platform used to programmatically author, schedule, and monitor workflows.

• Airflow allows users to define workflows as Directed Acyclic Graphs (DAGs)

• It provides a web-based UI for visualization and monitoring of workflows

• Airflow supports various integrations with different systems and tools

• Tasks in Airflow can be Python functions, scripts, or external processes

A DAG in Airflow stands for Directed Acyclic Graph, representing a workflow of tasks with dependencies.

• DAG is a collection of tasks with defined dependencies between them

• Tasks are represented as nodes and dependencies as edges in the graph

• Tasks can be scheduled to run at specific times or based on triggers

• Example: DAG for ETL process - extract data, transform data, load data

A datapipeline is a system that processes and moves data from one location to another in a structured and efficient manner.

• Datapipelines are designed to automate the flow of data between systems or applications.

• They typically involve extracting data from various sources, transforming it into a usable format, and loading it into a destination for analysis or storage.

• Examples of datapipelines include ETL (Extract, Transf...read more

Various types of inbuilt operators include arithmetic, assignment, comparison, logical, bitwise, and ternary operators.

• Arithmetic operators perform basic mathematical operations (+, -, *, /, %)

• Assignment operators assign values to variables (=, +=, -=, *=, /=)

• Comparison operators compare two values and return a boolean result (==, !=, >, <, >=, <=)

• Logical operators perform logical operations on boolean values (&&, ||, ...read more

File sensor operators are used to read data from files in a streaming data pipeline.

• File sensor operators are used in data processing pipelines to read data from files and pass it along the pipeline.

• They are commonly used in ETL (Extract, Transform, Load) processes to ingest data from files into a database or data warehouse.

• File sensor operators can be used to monitor directories for new files and trigger data processi...read more