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Engine Type | Examples | Further Reading |
RDBMS | Oracle, MySQL, Microsoft SQL Server, PostgreSQL, IBM Db2 | |
Document DB | MongoDB, Amazon DynamoDB, Databricks, Microsoft Azure Cosmos DB, Couchbase, Cassandra, Cosmos DB | |
Time Series | InfluxDB, Kdb+, Graphite, Prometheus, TimescaleDB | Stocks prices, logs, event management, time-based roll-ups |
Search Engines | Elasticsearch, Splunk, Solr, OpenSearch, MarkLogic | Reverse indices |
Graph DBs | Neo4j, Microsoft Azure Cosmos DB, ArangoDB, Virtuoso, OrientDB | Tuples, knowledge management, relationships, object predicate model, EAV |
Spatial DBs | PostGIS, Aerospike, SpatiaLite |