Try out SQL using a relational database.

Wine database The classic Northwind database A delivery company database

Try MongoDB

Try out the MongoDB NoSQL database.

Wine database Restaurants database

Try Cypher

Try out Neo4j's Cypher language to query social graphs.

Book club database Beer database

Tree Structure Visualizations

Try out different tree structure visualizations.

Binary search trees B-trees B-plus-trees

Try HBase

Try out HBase commands starting from an empty database.

Go to HBase playground

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