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Databases

3.5K+ posts

Last Updated: 28 October 2025

SQL functions are built-in operations that perform calculations, manipulate data, and return results in queries. They help simplify tasks like data transformation, aggrega...read more

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Aggregate Function

Last Updated: 17 October 2025

SQL aggregate functions are used to perform calculations on a set of values and return a single summarised result. Aggregate functions operate on multiple rows but return ...read more

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Applications of SQL

Last Updated: 10 October 2025

SQL (Structured Query Language) is a standard language used to manage and manipulate relational databases. It allows users to store, retrieve, update, and delete data effi...read more

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To-Do-List With MongoDB Integrated

Last Updated: 08 October 2025

This project is a full-stack CRUD (Create–Read–Update–Delete) web app that manages tasks with a simple, responsive UI. The backend uses Node.js + Express for routing and m...read more

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Web technologies

Best Practices for Securing NoSQL Databases in MongoDB

Last Updated: 08 October 2025

The term NoSQL database is the short form for a "non-relational database," which refers to databases with flexible schemas designed to handle unstructured, semi-structured...read more

Vector Indexing in MongoDB

Last Updated: 07 October 2025

Semantic search is quickly becoming part of everyday life. It goes beyond the traditional, simple text search to introduce the concept of semantics, aka meaning. This is w...read more

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Best Practices For Indexing in MongoDB

Last Updated: 07 October 2025

Indexing dictates how queries are run and influences the speed of query results. It’s an efficient use of resources and scalability through focusing on specific field(s). ...read more

MongoDB Developer – Salary, Skills & Career Guide

Last Updated: 11 September 2025

MongoDB has become one of the most popular NoSQL databases, powering modern cloud-native and data-driven applications. Its flexibility and scalability create strong demand...read more

Multi-Region Deployments with MongoDB Atlas

Last Updated: 07 October 2025

In today’s tech landscape, regional distribution in the cloud has become increasingly important. Deploying across multiple regions offers a range of benefits—from enhanced...read more

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Index Optimization

Last Updated: 27 October 2025

Index Optimization in SQL refers to creating and managing indexes on database tables to speed up data retrieval. An index works like the index of a book; instead of search...read more

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Subquery Optimization

Last Updated: 28 October 2025

Subquery optimization is the process of improving the performance of SQL queries that use subqueries by reducing redundant executions, rewriting them efficiently, and leve...read more

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Guide to Databases

Last Updated: 30 August 2025

This is a complete guide to databases, where you’ll learn the foundations and advanced concepts of the most widely used database technologies -SQL: The standard language t...read more

MongoDB Security Core Features That Every Developer Should Know

Last Updated: 06 September 2025

Security represents a critical component of software development as applications routinely handle sensitive information stored within database systems. The number and impa...read more

Power Your AI Application with MongoDB Vector Search

Last Updated: 07 September 2025

Most major database vendors, like MongoDB, are adding vector search capabilities to their products. It’s becoming a standard feature as demand for AI-powered applications ...read more

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Advanced SQL and Optimization Interview Questions - SQL

Last Updated: 02 September 2025

Advanced SQL and Optimization covers performance tuning and complex features that make SQL powerful. Topics include stored procedures, triggers, window functions, CTEs, in...read more

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