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Add Relational Databases Content (#1034)
* Add Relational Databases Content * Update readme.md Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>
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content/roadmaps/101-backend/content/106-relational-databases/readme.md
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# Relational databases | ||
# Relational Databases | ||
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A relational database is **a type of database that stores and provides access to data points that are related to one another**. Relational databases store data in a series of tables. Interconnections between the tables are specified as foreign keys. A foreign key is a unique reference from one row in a relational table to another row in a table, which can be the same table but is most commonly a different table. | ||
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<ResourceGroupTitle>Free Content</ResourceGroupTitle> | ||
<BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.ibm.com/cloud/learn/relational-databases'>Relational Databases</BadgeLink> | ||
<BadgeLink colorScheme='yellow' badgeText='Read' href='https://learnsql.com/blog/codd-article-databases/'>51 Years of Relational Databases</BadgeLink> | ||
<BadgeLink badgeText='Watch' href='https://www.edx.org/course/databases-5-sql'>Databases and SQL</BadgeLink> | ||
<BadgeLink badgeText='Watch' href='https://www.udacity.com/course/intro-to-relational-databases--ud197'>Intro To Relational Databases</BadgeLink> | ||
<BadgeLink badgeText='Watch' href='https://youtu.be/OqjJjpjDRLc'>What is Relational Database</BadgeLink> |