1. SQLite：
SQLite是一个提供关系数据库管理系统(RDBMS)的软件库。它是由D. Richard Hipp在2000年8月设计的。SQLite的设计目标是允许在不安装数据库管理系统(DBMS)或不需要数据库管理员的情况下运行该程序。 SQLite中的lite意味着在设置，数据库管理和所需资源方面的轻量级。
2. IBM Db2：
IBM Db2是IBM开发的一系列数据管理产品，包括数据库服务器。它是一个关系数据库管理系统(RDBMS)，它通过XML支持面向对象的功能和非关系结构。 Db2旨在有效地存储，分析和检索数据。它最初于1983年发布，并用C，C++， Java和汇编语言编写。
SQLite和IBM Db2之间的区别：
| SR.NO | SQLite | IBM Db2 |
|---|---|---|
| 1. | It is developed by D. Richard Hipp in 2000. | It is developed by IBM in 1983. |
| 2 | SQLite server operating systems are server-less. | Db2 server operating systems are AIX, HP-UX, Linux, Solaris, Windows and z/OS. |
| 3 | The primary database model for SQLite is Relational DBMS. | The primary database model for IBM Db2 is Relational DBMS. |
| 4 | It is written in C language. | It is written in C, C++, Assembly language, Java languages. |
| 5 | Famous companies like Adobe, Google, Bosch, Facebook, Dropbox, etc uses SQLite. | Famous companies like JPMorgan Chase, Bank of America, Scotiabank, Citi, etc use Db2. |
| 6 | It provide in-memory capabilities. | It do not provide in-memory capabilities . |
| 7 | It is a open source software framework. | It is a commercial databases. |
| 8 | It supports Secondary indexes. | It supports the secondary indexes without any restrictions. |
| 9 | It supports C, C#, C++, Matlab info, ColdFusion info, R info, Dart info, Delphi info, Erlang, Java, JavaScript, PHP, Python, Ruby. | It supports C, C++, Cobol, Java, Perl, PL/1, Python, R, Ruby. |
| 10 | It do not provides access rights for users and roles. | It provide fine grained access rights according to SQL-standard. |