Database
A database is an organized collection of data. It is the collection of schemas, tables, queries, reports, views, and other objects. The data are typically organized to model aspects of reality in a way that supports processes requiring information. Use this tag if you have questions about designing a database.
Top Database Articles
Top 50+ SQL Interview Questions and Answers for Intermediate to Advanced
Top SQL Interview Questions and Answers for Intermediate to Advanced. Top SQL Interview Questions for experience. Frequently asked SQL interview questions with answers
Top 50 SQL Interview Questions and Answers (Beginner to Intermediate)
Top 50 SQL Interview Questions and Answers (Beginner to Intermediate). Top SQL Interview Questions for fresher. Frequently asked SQL interview questions with answers
Top SQL Interview Questions for 2025
Top 10 SQL Interview Questions for 2025 (With Answers and Examples), Top SQL interview question and answer , SQL FAQs
Constraints in SQL
what is Constraints ? how to add Constraints in SQL column? use case of Constraints in SQL?. In SQL, Constraints are rules applied to table column(s) or entire tables to enforce data integrity and reliability. Constraints are essential for defining how data should be stored and retrieved. Constraints help prevent invalid data entry and maintain the consistency and accuracy of the data.
How to Drop a Table in SQL
DROP TABLE command in SQL is part of the Data Definition Language (DDL) and is used to permanently delete a table from a database. This action is irreversible and deletes the table structure, its data and associated metadata, including indexes, constraints and permissions.
Temporary Table in SQL
Temporary Table in SQL. What is Temporary Table in SQL? How to create a temporary Table in SQL? As the name describes , a temporary table is a table created to store temporary data in the database. You can perform SQL operations similar to the permanent table, such as CREATE, UPDATE, DELETE, INSERT, JOIN and more. Temporary tables are automatically deleted when the current client session is terminated. If needed, you can also explicitly delete a temporary table within the session.
Cloning Table in SQL
Cloning a table in Database Management is a common requirement when you want to create an exact or partial copy of an existing table, including its structure, data or both as per your business requirement. This feature is particularly useful in scenarios like testing, backup or creating a template for similar data storage.This operation can save significant time and effort when replicating table structures, attributes and data.
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
How to Show Tables in SQL
SHOW Table command in SQL | how to show all tables in a database | list of all user define tables in SQL | show tables in MYSQL, SQL Server and Oracle | retrieve list of all database tables in relational database.
Popular Topics
GitGit Commitgit branchArchitecturegit pullLanguage-Conceptsgit commandsGitHubJavaHashMap
Git is an open-source distributed version control system.
Git Commit
git branch is a command used to manage branches
architecture
git pull is a command used to fetching changes form remote repo
This tag is used to understand a basic part of the language.
List of all git commands
GitHub is a web-based hosting service for software development projects that use Git for version control.
Java is a high-level object-oriented programming language. it's firstly released by Sun Microsystems in 1995. Use this tag when you're having queries using or understanding the language. This tag is also applicable to Java libraries and frameworks.
A HashMap is a data structure that stores key-value pairs using hashing for fast access, insertion and deletion. Keys are unique and each maps to exactly one value. It offers average O(1) time complexity for basic operations and is widely used for efficient lookups, caching and data mapping in applications.
Popular Articles
install mysql by docker. docker mysql server installation. MySQL is one of the most popular open-source relational database management systems. Docker container is a great way to manage and deploy databases in a portable and isolated environment. In this article, we will walk through the steps by step to install and run MySQL in Docker.
Mastering the Template Design Pattern in C#, Template Design Pattern in Depth: Structure, Use Cases and Best Practices
namespace in c# | namspace concept in c# | c# namespace | c sharp namespace | what is namesapce and it's use cases | why should we use namespace
Amazon Transaction Logs (example question), Amazon Transaction Logs Interview question
Top 50 SQL Interview Questions and Answers (Beginner to Intermediate). Top SQL Interview Questions for fresher. Frequently asked SQL interview questions with answers
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.
do while loop in c# | c sharp do while loop | exit control loop in c#
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 |
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
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
Most Popular Tools
Explore our top online tools including a blank page for notes, a QR code generator, word counter and collaborative editor. These free, easy-to-use utilities help you write, analyze, share and organize content faster. Perfect for developers, creators and students to streamline everyday digital tasks efficiently.
Blank Page
Create a blank canvas for your ideas, notes or sketches. Use this tool for rough work and jotting down your thoughts
QR Code Generator
A QR Code Generator is a tool that instantly converts text, URLs or other data into a scannable QR code. Users can create custom QR codes for websites, contact info or messages. It's commonly used for quick access, sharing and printing without needing a backend or complex setup.
Word Counter
Perform various string operations like counting characters, words or letters.
Collaborative Editor
Collab Editor is a powerful, free-to-use online platform that lets you collaborate in real-time. Whether you re working on documents, brainstorming idea, or discussing projects etc