Скачать или смотреть What are Relational databases? Data Warehousing concepts

What are Relational databases? Data Warehousing concepts #businessintelligence #education

Relational databases are a type of database that organizes data into tables, where each table represents a specific entity (e.g., customers, products). Data is stored in rows and columns, with relationships between tables defined using primary and foreign keys.

Key characteristics:

Structured: Data is organized in a predefined structure.
Normalized: Data is typically normalized to reduce redundancy and improve data integrity.
Relational: Relationships between tables are defined using primary and foreign keys.
SQL-based: Relational databases are typically accessed and managed using SQL (Structured Query Language).
Examples of Relational Databases:

Commercial Databases:
Oracle Database
Microsoft SQL Server
MySQL
PostgreSQL
IBM DB2
Sybase ASE
Teradata
Informix
Open-Source Databases:
MariaDB
SQLite
Firebird
HSQLDB
Apache Derby
Cloud-Based Databases:
Amazon RDS
Microsoft Azure SQL Database
Google Cloud SQL
Oracle Cloud Database
IBM Cloud Databases

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