A database is an organized collection of data. In this section we'll learn about relational and non-relational (NoSQL) databases, and Structured Query Language (SQL)

SQL Tutorial
SQL or Structured Query Language is the De-facto programming standard for relational databases . Using SQL, one can view, modify, delete data and data structures in the databases. All the articles in the category are compatible to ANSI standard of SQL.
Database Basic Concepts
The abbreviation RDBMS stands for Relational Database Management System. Database management systems that follow E. F. Codd's Relational Model are called Relational Database Management System. Relational model of storing data is different from other models such as Hierarchical Model, Network Model etc.
No SQL Tutorial
NoSQL encompasses a wide variety of different database technologies and were developed in response to a rise in the volume of data stored about users, objects and products, the frequency in which this data is accessed, and performance and processing needs. Relational databases, on the other hand, were not designed to cope with the scale and agility challenges that face modern applications, nor were they built to take advantage of the cheap storage and processing power available today.
Oracle Tutorial
This section contains various Oracle database related articles, tutorials and white papers covering a wide range of areas starting from Oracle architecture to performance tuning
MSSQL Server Tutorial
Microsoft SQL Server is a relational database management system developed by Microsoft. Related articles and tutorials on MS SQL Server database is presented under this section.
HANA Tutorial
High-Performance Analytic Appliance is an In-Memory Relational Database from SAP. This is the next wave of In-Memory Computing Technology providing faster, smarter decisions with real-time insights.