PostgreSQL
PostgreSQL is a free, open source relational database management system. It was initially developed as a successor of the Ingres database
Top PostgreSQL Articles
How to Truncate a Table in SQL
TRUNCATE Table command in SQL | how to TRUNCATE TABLE in a database | how to TRUNCATE TABLE in SQL | TRUNCATE TABLE in MYSQL, SQL Server and Oracle
How to Rename a Tables in SQL
Rename Table command in SQL | how to rename a table in a database | how to rename a table in SQL | rename tables in MYSQL, SQL Server and Oracle
SQL COUNT Function: Syntax & Practical Examples
Learn how the SQL COUNT function works using COUNT(*) and COUNT(column). Understand row counting with conditions, grouping and real examples.
UPDATE Statement in SQL : Syntax & Examples
Learn how the SQL UPDATE statement modifies existing records in a table. Update one or multiple columns safely using conditions with real examples.
INSERT INTO Statement in SQL with Syntax & Examples
Learn how the SQL INSERT INTO statement is used to add new records into database tables. Understand syntax, methods and real-world usage examples.
ORDER BY Clause in SQL: Sort Query Results
Learn how the SQL ORDER BY clause sorts query results in ascending or descending order using one or multiple columns with examples.
SELECT DISTINCT Query in SQL for Unique Records
Learn how SELECT DISTINCT in SQL fetches unique records from a table using WHERE conditions, ORDER BY and GROUP BY for accurate query results.
SELECT Query in SQL : Fetch Data Using WHERE, ORDER BY & GROUP BY
Learn how the SQL SELECT query is used to fetch data from databases with conditions, sorting, grouping and filtering for real-world queries.
Popular Topics
Experienced Candidate IntervieDistributed SystemApplication DesignInterview QuestionsSystem Design InterviewTechnical InterviewInterviewLanguage-ConceptsInterview PreparationC# Collection
Experienced Candidate Interview is a hiring process designed for professionals with prior work experience, focusing on advanced technical expertise, real-world problem-solving, system design knowledge, leadership ability and past project impact. It evaluates not only skills but also decision-making, ownership and contribution to business outcomes.
A distributed system is a network of independent computers that work together to achieve a common goal. These systems share resources, process tasks in parallel and ensure fault tolerance. Used in cloud computing, databases and large-scale applications. They improve scalability, reliability and performance by distributing workloads across multiple nodes efficiently.
Application design is the process of planning and structuring an application’s architecture, user interface, data flow and functionality to meet user and business requirements. It involves decisions on technology stack, design patterns, scalability and security. Good application design ensures performance, maintainability and a seamless user experience across platforms and devices.
Interview Questions are structured queries asked by employers to evaluate a candidate’s technical skills, problem-solving ability, experience, communication skills and cultural fit. These questions can include HR, behavioral, technical, coding and situational topics to assess whether the candidate is suitable for the job role and organization.
System Design Interview is a technical interview round where candidates design scalable, reliable and efficient software systems. It evaluates understanding of architecture, databases, APIs, scalability, load balancing, caching and real-world problem-solving to assess the ability to build large-scale applications.
Technical Interview is a structured assessment where employers evaluate a candidate’s technical skills, problem-solving ability and practical knowledge related to a specific role. It typically includes coding challenges, system design questions, debugging tasks and discussions about past projects. The goal of a technical interview is to measure how effectively a candidate can apply their technical expertise to solve real-world problems.
A structured conversation where one participant asks questions and the other provides answers of those questions.
This tag is used to understand a basic part of the language.
Interview Preparation is the process of getting ready to perform confidently and effectively in a job interview. It includes researching the company, understanding the job role, practicing common interview questions, improving communication skills and reviewing technical or domain knowledge. Proper interview preparation increases confidence, reduces anxiety, and improves your chances of securing the job.
In C#, Collections are classes in the System.Collections and System.Collections.Generic namespaces that store and manage groups of related objects. They include types like List<T>, Dictionary<TKey,TValue>, Queue<T> and Stack<T>. Collections offer dynamic sizing, built-in search, sorting and iteration, making data handling efficient and flexible in C# applications.
Popular Articles
List Handling in Java vs C# vs C++ A Deep Comparison, This comparison provides a full view java , c# and c++ List like data structures
Rotate an array of n elements to the right by k steps | right rotate the elements of an array | array rotate | rotate array by k step
Learn how to create a primary key in SQL using syntax and examples. Ensure unique records, improve query performance and build table relationships.
Find the Maximum Subarray Sum | Largest Sum Contiguous Subarray | Kadane’s Algorithm | Maximum Subarray | Given an integer array nums, find the
subarray with the largest sum and return its sum | The Efficient Way to Find Maximum Subarray Sum
You are given two integer arrays arr1 and arr2, sorted in accending order, and two integers m and n, representing the number of elements in arr1 and arr2 respectively. Merge arr1 and arr2 into a single array sorted in accending order.
Length of the Longest Substring Without Repeating Characters | Given a string str find the length of the longest substring without repeating characters | find the length of the longest substring without repeating characters in a given string |
Top High-Level Design(HLD) Interview Questions and answers, HLD QnA, HLD interview preparation
Mastering the Template Design Pattern in C#, Template Design Pattern in Depth: Structure, Use Cases and Best Practices
Mastering the Singleton Design Pattern in C#, Singleton Design Pattern in Depth: Structure, Use Cases and Best Practices, in depth design pattern, LLD , low level design
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