1. Redis :
Redis stands for Remote Dictionary Server which is an in-memory data structure project implementing a distributed, in-memory key-value database with optional durability. Redis was developed by Redis labs and initially released on May 10, 2009. It is written in ANSI and C languages. Redis offers memory efficiency, fast operating speed, high availability and provides some features like tenability, replication, clustering, etc.
2. IBM Db2 :
Db2 is a family of data management products, including database servers, developed by IBM. It is a Relational Database Management System (RDBMS) which supports object-oriented features and non relational structure with XML. Db2 is designed to store, analyze and retrieve the data efficiently. It was initially released in 1983 and is written in C, C++, Java and Assembly language.
Difference between Redis and IBM Db2 :
|1.||It was developed by Redis labs and initially released on May 10, 2009.||It was developed by IBM and initially released in 1983.|
|2.||Redis is written in ANSI and C languages.||Db2 is written in C, C++, Assembly language, Java languages.|
|3.||The primary database model for Redis is Key-Value Store.||The primary database model for Db2 is Relational DBMS.|
|4.||The license for Redis is Open Source.||The license for Db2 is Commercial.|
|5.||Redis is Data Schema Free.||In Db2 data schema is fixed.|
|6.||Redis does not support XML data format.||Db2 supports XML data format.|
|7.||Redis does not support SQL queries.||Db2 supports SQL.|
|8.||Redis does not have the concept of Foreign keys.||Db2 has the concept of Referential Integrity and Foreign keys.|
|9.||Redis does not have Triggers.||Db2 has Triggers.|
|10.||Redis supports secondary indexes with RediSearch module only.||Db2 supports secondary indexes without any restrictions.|
|11.||Server operating systems for Redis are BDS, Linux, OS X and Windows.||Server operating systems for Db2 are AIX, HP-UX, Linux, Solaris, Windows and z/OS.|
|12.||Some companies like Twinkl Educational Publishing, Merrill Corporation, ASOS.com Limited, Owler, Inc., etc use Redis.||Some companies like JPMorgan Chase, Bank of America, Scotiabank, Citi, etc use Db2.|
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