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System Apache Cassandra Oracle DB
 Version 3 12c
 Drawbacks community support only available costly. You get comparable performance with open source rdbms databases
 Advantages Open Source Columnar NoSQL Database with excellent performance Robust. Long proven history. Remote connections very stable
 Languages Supported C C# C++ Java Node.js PHP Python Ruby C, C++
 Website www.datastax.com/products/datastax-enterprise https://www.oracle.com
 Name Apache Cassandra Oracle DB
 XML Support no yes
 JSON Support yes yes
 Brief description MongoDB is a free and open-source cross-platform document-oriented database program. Classified as a NoSQL database program, MongoDB uses JSON-like documents with schemata. MongoDB is developed by MongoDB Inc. It is a database commonly used for running online transaction processing (OLTP), data warehousing (DW) and mixed (OLTP & DW) database workloads
 Database Model Primarily a NoSQL database Primarily a relational database
 Technical Documentation docs.datastax.com docs.oracle.com/en/database
 License Commercial Commercial
 Cloud-based / SaaS Virtual Machine Images available in AWS Azure and Google Cloud Marketplace. https://bitnami.com/stack/cassandra/cloud/aws Available in AWS, Azure Clouds. Available as a SaaS option in Oracle Cloud
 Implementation Language C,C++ C,C++
 Operating System Supported Linux OS X Solaris Windows AIX HP-UX Linux OS X Solaris Windows z/OS
 Options for Integration / Access API CQL (Cassandra Query Language is like SQL) Thrift Protocol Rest API (Oracle Lite), Oracle Call Interface (OCI) JDBC ODBC
 Consistency Highly Consistent Highly Consistent
 Foreign Keys No Yes
 Streaming Support Yes No
 Analytics Support One of the core features is to build timeseries apps Need to buy Exadata (high cost)
 Data Storage Schema Key Value Column Family NoSQL DB Relational Database
 Notable Users Samsung Smartthings, ING Vysya , Safeway Most of the Fortune 500 Companies
 Key Differentiator Open Source NoSQL DB. The GoTo DB for Columnar NoSQL databases Highly reliable as a transactional database
 Concurrency Yes Yes
 Partitioning Yes No
 Replication Yes - Tunable Master-Slave Replication Yes
 Secondary Indexes Yes Yes
 SchemaLess Yes No
 SQL Query No, but CQL is similar to SQL Yes