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0: 20+ SQL best practices & optimisation interview Q&As

SQL Best Practices

SQL is very easy to learn, but lots of hands-on experience is required to master to perform the below tasks.

1) Translating any business requirements into SQL.

2) Writing efficient, readable & maintainable SQL.

3) Breaking down &

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0: 50+ SQL scenarios based interview Q&As – What is wrong with this SQL code?

This extends 18+ SQL best practices & optimisation interview Q&As. You can practice these SQLs by setting up the data on db-fiddle MySQL V8.0 or a database server & SQL client of your choice.

Interviewers can use these 11 questions to quickly judge your real SQL experience without relying on what you say on your CV.

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00: 50+ SQL scenarios based interview Q&As on identifying & deleting duplicate records

DB Fiddle - Practice SQL

50+ SQL interview questions and answers to solve real business scenarios. SQL is widely used in building microservices & Big Data projects. Learning SQL syntax is easy, but being able to convert a given business requirement into a query takes lots of practice. These scenarios based interview questions can assesses your experience.

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01: 12 Maven interview Questions & Answers

Q1. What is the difference between snapshot versions and release versions? A1. The term “SNAPSHOT” means the build is a snapshot of your code at a given time, which means downloading 1.0-SNAPSHOT today might give a different file than downloading it tomorrow or day after. … Read more ›...

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01: 12+ Git Source control must know basics interview Q&As

Q1. How does Git differ from SVN (i.e Subversion)? A1. #1. Git is a distributed source control system meaning that there will be multiple client repositories. SVN is one repository with lots of clients. … Read more ›...

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01: 14 Unix must-know interview questions & answers

Q1 How do you remove the Control-M characters from a file?
A1 Control-M is a carriage return on keyboard. The ^M is the keyboard equivalent to \r. In a file originated from DOS/Windows the \r\n is used for an end of line carriage return, whereas in Unix it is \n for a new line.

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01: 15+ Apache Kafka must-know basics interview Q&As – Part 1

Apache Kafka is used in Micro Services Architecture (i.e. MSA) to Big Data & Low Latency application architectures. Q01. What is Apache Kafka? A01. Apache Kafka is a message broker like ActiveMQ, IBM WebSphere MQ, RabitMQ, etc. Apache Kafka is a distributed messaging broker with the purpose of being a...

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01: 15+ Apache Kafka must-know basics interview Q&As – Part 2

This extends 8 Apache Kafka must-know basics interview Q&As – Part 1. Q07. What do you understand by the term “data is presented to Kafka as stream“? A07. This means either the Data is acquired from source systems in real time or as a scheduled extract process, … Read more...

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01: 15+ Apache Kafka must-know basics interview Q&As – Part 3

This extends Apache Kafka must-know basics interview Q&As – Part 2. Q15. What do you understand by the terms Kafka Consumer Groups & group.id? A15. Consumers read from any single partition, … Read more ›...

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01: 21 Docker DevOps interview Q&As

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01: Apache Kafka example with Java – getting started tutorial

AKHQ - Apache Kafka UI

Apache Kafka with Java getting started tutorial demonstrates how quickly you can get started with Kafka using Docker.

Step 1: Make sure Docker engine is installed on your computer. For example on a Mac OS $ brew cask install docker or on Windows.

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01: AWS interview Q&As on VPC, Subnets, Availability Zones, VPN, Route tables, NACLs & Security Groups

This extends Architecture Networking. Here are some must know-concepts as a Cloud Engineer, Data Engineer or a Software Engineer.

The above diagram addresses many of the questions that follow.

Q1. What is a VPC in AWS?
A1. A virtual private cloud (VPC) is a virtual network dedicated to your AWS account.

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01: Azure interview Q&As on Region, VNet, Subnets, AZs, Availability Set, etc

Azure Networking

This extends Architecture Networking. The below diagram will help you understand many of the following questions. Q01. What do you understand by the Azure terms Tenant, Subscription, Region, … Read more ›...

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1 2 3 4 5 … 14

300+ Java Interview Questions - FAQs

Java Interview FAQs 300+
Java FAQs - 01: Prepared?
(2)
Java FAQs - 02: Ice Breaker
(5)
Java FAQs - 03: Core Java
(15)
Java FAQs - 03 Java 9 to 25
(8)
Java FAQs - 04: OOP & FP
(10)
Java FAQs - 05: JEE
(12)
Java FAQs - 06: Spring
(10)
Java FAQs - 07: Hibernate
(4)
Java FAQs - 08: Web Services
(6)
Java FAQs - 09: Microservices
(12)
Java FAQs - 10: Messaging
(4)
Java FAQs - 11: Architecture
(5)
Java FAQs - 12: RDBMS
(2)
Java FAQs - 13: SQL
(6)
Java FAQs - 14: Code Quality
(4)
Java FAQs - 15: Key Areas
(14)
Java FAQs - 16: UML
(1)
Java FAQs - 17: GIT
(4)
Java FAQs - 18: Linux
(3)
Java FAQs - 19: DevOps (CI/CD)
(9)
Java FAQs - 20: AWS (Cloud)
(5)
Java FAQs - 21: Maven
(1)
Java FAQs - 22: Regex
(2)
Java FAQs - 23: JSON & XML
(3)
Java FAQs - 24: JMeter
(2)
Spring & Hibernate Interview FAQs
Framework - Hibernate Q&As
(13)
Framework - Spring Core
(6)
Framework - Spring MVC
(7)
Framework - Spring Cloud
(1)
Framework - Spring boot
(4)
Framework - Spring IO
(1)
Framework - Spring Config
(5)
Java Architect Interview FAQs
Architecture - Patterns
(10)
Architecture - How to
(17)
Architecture - AWS
(10)
Architecture - Azure
(6)
Architecture - Distributed
(8)
Architecture - Microservices
(11)
Architecture - Networking
(6)
Architecture - QoS
(1)
Architecture - ERD
(1)
Architecture - ETL
(3)
Architecture - Low Latency
(6)
Architecture - UML
(1)
Java code quality interview Q&As
Code Quality - Automation
(1)
Code Quality - Code Coverage
(2)
Code Quality - FAQs
(7)
Code Quality - Profiling
(3)
Code Quality - Performance
(2)
Code Quality - Unit Testing
Code Quality - BDD
(4)
Code Quality - JMockit
(15)
Code Quality - Mockito
(4)
Code Quality - Unit Testing FAQs
(3)
Code Quality – Testing DAOs
(4)
Code Quality – JUnit & Mockito
(6)
Code Quality – JUnit Web
(2)
Code Quality - Spring TXN
(2)
Java coding interview Q&As
Coding - Can you write code?
(22)
Coding - Complete the code
(13)
Coding - Converting from A to B
(6)
Coding - Designing your classes
(9)
Coding - Data Structures
Coding - Arrays
(2)
Coding - Big O notation
(2)
Coding - Graph Structure
(2)
Coding - LinkedList Structure
(2)
Coding - Map Structure
(1)
Coding - Pointer Algorithms
(3)
Coding - Queue Structure
(1)
Coding - Searching Algo
(1)
Coding - Sorting Algo
(4)
Coding - Stack Structure
(1)
Coding - Tree structure
(14)
Coding - Data Which & Why
(2)
Coding - Passing the unit tests
(5)
Coding - What is wrong?
(10)
Coding - Home Assignments
(8)
Coding - Written Test Core Java
(4)
Coding - Written Test JEE
(1)

Tutorials on Java & Big Data

Tutorials - Golang
5
Tutorials - Big Data
TUT - ⏯ Starting Big Data
2
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10
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2
TUT - Pig
3
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3
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14
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4
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21
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8
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8
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2
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5
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5
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1
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16
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3
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2
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14
TUT - Apache Kafka
8
TUT - Hadoop
1
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28
TUT - Zookeeper
2
Tutorials - Enterprise Java
TUT - Starting with Java
22
TUT - ⏯ Java Video Tutorials
TUT - ⏯ Starting with Java
12
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1
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5
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6
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2
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2
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2
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3
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6
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4
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3
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4
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4
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1
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1
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8
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2
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9
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3
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7
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1
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1
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5
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3
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8
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2
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10
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3
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5
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6
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1
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2
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2
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2
TUT - Spring Cloud
9
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3
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4
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2
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1
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9
TUT - Apache Kafka
3
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2
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5
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3
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2
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1
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6
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2
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2
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4
TUT - Linux
7
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3
TUT - YAML
1