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05: Q19-Q24 How to create a well designed Java application?

A software application is built by coupling various classes, modules, and components. Without coupling, you can’t build a software system. But, … … Read more ›...

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Data categories in Data warehouse & Data lake

Q01. What are the different types of data that get stored in a data lake or data warehouse? A01. An enterprise … … Read more ›...

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02: Getting started with conda on Mac OS

This extends Getting started with Python on Mac OS.

What is conda?

Conda is an open source package and environment …

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Q08- Q12 Scenarios Based Hive Query Language (i.e. HQL) Interview Q&As

This extends Q01 – Q07 Scenarios Based Hive Query Language (i.e. HQL) Interview Q&As. Q08. When you have a requirement … … Read more ›...

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01: Getting started with Python on Mac OS

Python is popular in Big Data & data science projects. This tutorial outlines the basic steps to get started with Python …

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22: Writing Tests in Databricks Notebooks in Python

Prerequisite: Extends 03: Databricks – Spark SCD Type 1. Note: databricks-connect let’s you connect your favourite IDE to your Databricks … … Read more ›...

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04b: Databricks – Spark SCD Type 2 with Merge

Prerequisite:

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04a: Databricks – Spark SCD Type 1 with Merge

Prerequisite: Extends 03: Databricks – Spark SCD Type 1. What is SCD Type 1 SCD stands for Slowly C… … Read more ›...

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Q01 – Q07 Scenarios Based Hive Query Language (i.e. HQL) Interview Q&As

Q1. Given you have a Hive table partitioned by ship_type where the ship_type can be DIRECT or PICK_UP. The last job … … Read more ›...

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SQL querying Temporal tables & SCD Type 2

Q1. What is a temporal table? A1. Temporal tables store and maintain information with respect to time. This tracks … … Read more ›...

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What are the uses of underscore i.e _ in Scala?

The underscore (_) is one of the symbols used very widely in Scala. It is used as a Wild … … Read more ›...

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02: Scala FP basics: First-class function, higher order function, statements Vs expressions, immutability & recursion

This extends Scala Functional Programming basics – pure functions, referential transparency, side effects, etc.

Q1. What is a first-class function?…

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01: Scala Functional Programming basics – pure functions, referential transparency, side effects, etc

Q1. What is a pure function?
A1. A pure function is a function where the following conditions are met:

1) The …

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Java FAQs to Fast-track & Go places

Java Interview Q&As

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