MariaDB vs IBM DB2

DB2:

IBM developed the Database named DB2. It is a database that follows relational database management system principles. By using DB2, we can fetch the data, analyze it and store it efficiently. DB2 is based on Object-Oriented features and non-relational XML structures. It is a group of related data management products that include data servers developed and marketed by IBM. It is developed on a concept based on SQL, i.e., standard query language on the relational database system, which means DB2 uses SQL queries to retrieve and store the data into the Database. We can use DB2 on AS/400 IBM mainframe and personal computers.

DB2 also supports the storage of non-relational formats like XML and JSON DP. It is not open-source but provides some free distributions. IBM fully owns it, and if we want to run on large servers should have to pay for the licensing

MariaDB is an open-source relational database management system (RDBMS) compatible drop-in replacement for the widely used MySQL database technology.

MariaDB Foundation has developed this Database, and the initial release date is 29th October 2009. It provides us great features which excel it in performance and user orientation as compared to MySQL

Let's see some advantages:

DB2 has been around for years and has matured as a robust RDBMS. 

1.  It provides very high concurrency, Allowing multiple applications and users to access the data parallelly and concurrently.

2. It offers easy access, and user is not required to know the physical       relationships of the Database they wish to access

Disadvantages of DB2:

• The delivery of developer tools by IBM is late.
• It is a little behind in rolling out the next-generation features.

MariaDB:

It is a database system, i.e., a Database server. It is an improved version of MySQL, and it is a relational database management technology. The developers who developed mySQL are the same ones who developed MariaDB.

It is open-source, and it will remain open source as assured by developers.

It also transforms the data into structured information, which is used for a large number of applications. At first, it was implemented as a replacement for MySQL. The primary reason is it is speedy, robust, and scalable.

Advantages of MariaDB:

• As compared to MySQL, MariaDB offers support for more engines.
• MariaDB is more powerful than MySQL and has optimized performance.

Disadvantages of MariaDB:

• Caching in MariaDB is not as fast as expected.
• As with many other free database engines, you have to pay for support.

Sr no	MariaDB	IBM DB2
1	The developer of this database is MariaDB Corporation	The developer of this database is IBM
2	It was initially released on 2009	It was initially released on 1983
3	It is implemented in Languages like C, C++, Bash and Perl	It is implemented in Language C++
4	The server operating systems are as follows Linux, Windows, Solaris, and FreeBSD	The server operating systems are as follows AIX, HP_UP, Linux, Windows, Solaris, and z/OS
5	It offers ACID transactions but without snapshot isolation	It offers ACID transactions
6	The data schema is dynamic columns	The data scheme is fixed
7	Companies that use MariaDB are DBS bank, Red Hat, Walgreens, Deutsche Bank, Verizon, AWS, ServiceNow and many more	Well known companies like JPMorgan, Bank of America, Citi, wells Fargo use IBM’s DB2.
8	The programming languages it supports are Java, OCaml, Perl, Eiffel, Erlang, D, C++, C#, Ada, PHP, Ruby, Haskell, Go, Scheme	The programming languages it supports are C, Delphi, PHP, Ruby, Visual Basic, Fortran, Cobol, Python, C++, C# , JAVA
9	It supports replication methods like multi source and source replica replication method	It supports replication methods
10	Partitioning methods are horizontal partitioning and Sharding	It only uses Sharding and partitioning method