Blog Archives

00: Data Lake Vs. Data Warehouse Vs. Delta Lake

Modern data architectures will have both the Data Lakes & Data Warehouses. The Data Engineers build the data pipelines for the data analysts and scientists to build business reports &

Read more ›



00: Q1 – Q6 Hadoop based Big Data architecture & basics interview Q&As

There are a number of technologies to ingest & run analytical queries over Big Data (i.e. large volume of data). Big Data is used in Business Intelligence (i.e. BI) reporting,

Read more ›



01: Lambda, Kappa & Delta Data Architectures Interview Q&As – Overview

Q1. What is the Lambda Architecture? A1. It is a data-processing architecture designed to handle Big Data by using both real-time streaming (e.g. … Read more ›...



02: Q7 – Q15 Hadoop overview & architecture interview Q&As

This extends Q1 – Q6 Hadoop Overview & Architecture interview Q&As. Q7. What are the major machine roles in a Hadoop cluster? A7. … Read more ›...



08: Q71 – Q75 ETL/ELT on BigData Interview Q&As

Q71. Can ETL in traditional data management (E.g. RDBMs) be migrated to EDH (i.e. Enterprise Data Hub) powered by Hadoop eco system? A71. Yes, it can be migrated, … Read...



10 Distributed storage & computing systems interview Q&As

A distributed system consists of multiple software components that are on multiple computers (aka nodes), but run as a single system. These components can be stateful, stateless, or serverless, and...



16: Q114 – Q115 CAP theorem interview Q&As

Q114. What does CAP stand for in CAP theorem? A114. In a distributed system having two or more nodes, and maintain one or more copies of your data, … Read...



300+ Java Developer Interview Q&As

800+ Java Interview Q&As

Top