Oracle, as the world's largest relational Database provider, has also joined the NoSQL Database chain in its product chain. In addition, this new Database name is so domineering that it is called NoSQL Database.
Oracle's NoSQL Database is one of the components of the Big Data Appliance released on Oracle's global Daquan in October 4, big Data Appliance is a system that integrates Hadoop, NoSQL Database, Oracle Database Hadoop adapter, Oracle Database Hadoop loader, and R language.
The following is a brief introduction to the features of NoSQL databases:
· Simple data model
Key-Value storage, where key consists of primary key and secondary key
Written in Java and supports Put, Delete, and GET operations based on Java APIs.
· Strong scalability
Supports automatic hash function-based data sharding policies
Provides Intelligent Control Based on the Data Node topology and access latency to provide the best data access performance.
· Behavior predictability
Provides ACID transaction support and supports transaction-level settings based on global and single operations.
A Cache layer composed of B-tree data structures and an efficient query scheduling mechanism provide controllable request latency
· High Availability
No spof
Provides a built-in and configurable data replication and backup mechanism.
Good fault tolerance for single point or multiple points of failure
Provides disaster recovery for data through data backup across data centers
· Simple management and maintenance
In addition to command lines, it also provides Web-based interface management tools
Provides control over the system and data nodes
Allows you to view the system topology, system status parameters, current load conditions, request latency records, internal events, and notifications.