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01: NoSQL interview Q&As – Key Value, Wide Column, Document & Graph databases

Q1. What are the key differences between SQL & NoSQL databases? A1. Now a days you have a choice which database to use based on your requirements. There are pros & cons for each database. SQL NoSQL (Not Only SQL) SQL databases store structured data & enforces schema (i.e. structure)…

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06: Q51 – Q61 HBase Interview Questions & Answers

Q51. Is HBase a relational database? A51. HBase is not a relational database. It is a NoSQL database. Hbase is a column-oriented (aka columnar) database management system, which runs on top of HDFS (Hadoop Distribute File System). Q52. What does HBase consist of? Why is it called a columnar &…

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10: Q80 – Q87 HBase Schema Design Interview Q&As

Q80. Why is schema design for HBase is different from relational database design? A80. HBase is a columnar NoSQL database. This means no two rows in a table need to have the same columns. In a columnar database table, each row contains cells containing

Values are stored against each…

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InfluxDB interview questions & answers

Q01. What is InfluxDb?
A01. InfluxDB is an open-source time series database. It is a Big Data, NoSQL database that allows for massive scalability, high availability, fast write, and fast read. As a NoSQL, InfluxDB stores time-series data, which has a series of data points over time.

InfluxDB is a resource-intensive database, which means that it requires a significant amount of memory, CPU, and storage to operate efficiently.… Read more ...



Java Developer & Architect Interview Q&As

Java & Big Data Tutorials

Prepare to fast-track & go places

FAQs are marked with 🔥 as some questions are not only more popular with the interviewers, but also required to build robust systems. If you are an interviewer, cover well rounded topics to judge real experience.

Don't be overwhelmed by the number of questions as the technology stacks are so vast. The quality of the answers you provide to some of the key technical & open-ended questions along with your soft skills & attitude will go a long way in getting the job offers.

Note: Some Q&As belong to more than one category.
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