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System ElasticSearch Exadata
 Version Version 6.4.1 (released in September 2018) x6-8
 Drawbacks Elasticsearch AMI not available Very costly. You get comparable performance with lower cost
 Advantages Large number of drivers present for integration Robust. Comes from the Oracle Stable
 Languages Supported .Net Groovy Java JavaScript Perl PHP Python Ruby All languages supported by Oracle Database
 Website www.elastic.co/­products/­elasticsearch https://www.oracle.com/engineered-systems/exadata/index.html
 Name ElasticSearch --
 XML Support no --
 JSON Support yes --
 Brief description Elasticsearch is a search engine based on Lucene. It provides a distributed, multitenant-capable full-text search engine with an HTTP web interface and schema-free JSON documents. --
 Database Model Key Value NoSQL Model --
 Technical Documentation www.elastic.co/­guide/­en/­elasticsearch/­reference/­current/­index.html --
 License Open Source. Commercial version with HA available with redislabs.com --
 Cloud-based / SaaS ElasticSearch Cloud Cluster available from ElasticSearch --
 Implementation Language C,C++ --
 Operating System Supported Linux OS X Solaris Windows --
 Options for Integration / Access API Proprietary protocol using JSON --
 Consistency Highly Consistent --
 Foreign Keys No --
 Streaming Support Yes --
 Analytics Support NA --
 Data Storage Schema Inverted Index --
 Notable Users -- --
 Key Differentiator No known Enterprise Competitor apart from Amazaon Cloud Search --
 Concurrency Yes --
 Partitioning Yes --
 Replication Yes --
 Secondary Indexes Yes --
 SchemaLess Yes --
 SQL Query No --