ProjectPro

JUNE 6, 2025

What SQL commands allow you to validate data completion? What role does impact analysis play in an ETL system? For instance, if a company previously managed its data in Oracle 10g and now wants to switch to a SQL Server cloud database, it will need to be moved from Source to Target.

Data Engineering 45

Data Engineering Data Engineer ETL Tools Engineering 45

Data Engineering Podcast

NOVEMBER 4, 2021

A natural outgrowth of that capability is the more recent growth of reverse ETL systems that use those analytics to feed back into the operational systems used to engage with the customer. Connect your warehouse to Hightouch, paste a SQL query, and use their visual mapper to specify how data should appear in your SaaS systems.

Data Warehouse 100

Data Warehouse ETL System Business Intelligence Data Lake 100

Data Engineering Podcast

JANUARY 7, 2022

By acting as a virtual hub for data assets ranging from tables and dashboards to SQL snippets & code, Atlan enables teams to create a single source of truth for all their data assets, and collaborate across the modern data stack through deep integrations with tools like Snowflake, Slack, Looker and more.

ETL System 100

ETL System Data Pipeline Data Warehouse Architecture 100

Knowledge Hut

MAY 2, 2024

The Pig has SQL-like syntax and it is easier for SQL developers to get on board easily. It also has rich Spark SQL APIs for SQL-savvy developers and it covers most of the SQL functions and is adding more functions with each new release. Spark is fast and so can be used in Near Real Time data analysis.

Scala 96

Scala Hadoop Java Data Mining 96

Ascend.io

DECEMBER 21, 2022

However, data warehouses are only accessible to technical users who know how to write SQL. And, even if you are an SQL expert, there is still a gap between the warehouse and frontline business tools companies use every day. In many ways, ETL and ELT are a one-way door: they aren’t designed to read or write data out of your warehouse.

ETL Tools 52

ETL Tools ETL System Data Consolidation Data Warehouse 52

ProjectPro

JUNE 6, 2025

Thus, to help you overcome these problems, we have compiled a list of the top 50 ETL interview questions and answers with the help of ProjectPro experts based on the job title and specific tools and technologies, including SQL and Python. What is the difference between ETL testing and Manual testing ? Use cache to keep data.

ETL Tools 40

ETL Tools Database-centric Data Warehouse ETL System 40

Grouparoo

FEBRUARY 9, 2022

ETL testing can be challenging since most ETL systems process large volumes of heterogeneous data. However, establishing clear requirements from the start can make it easier for ETL testers to perform the required tests. Stages of the ETL Testing Process The ETL testing process can be broken down into 8 different stages.

Process 52

Process ETL System Data Warehouse Metadata 52