1. 弹性搜索：
它是一个分布式搜索和分析引擎。它是开源的，可以用于所有类型的数据。它是用Java编程语言实现的，支持所有具有Java虚拟机(JVM)的操作系统。它是Elastic的主要组件Stack，这是一个用于数据分析和可视化的开源应用程序。它具有很高的可扩展性，执行动作的速度也很高，这使其成为数据分析、处理和可视化的简单快捷的工具。
2. IBM DB2：
它是 IBM 于 1983 年开发的关系数据库。它被认为是为 AI 构建的数据库管理产品家族。它具有增强的执行交易的能力。它基于ACID的原理工作，具有很高的灵活性和性能。它具有高效的备份设施，被认为非常安全。它非常可靠，并得到 Linux、Unix 和 Windows 操作系统的支持。它具有商业许可证，具有很高的可扩展性。
Elasticsearch 和 IBM DB2 的区别：
| S.NO. | Elasticsearch | IBM DB2 | |||
|---|---|---|---|---|---|
| 1. | Elasticsearch is a search and analytics engine based on Apache Lucene. | IBM DB2 is a relational database model. | |||
| 2. | The primary database model is a search engine. | Primary database model is document store and RDF store in IBM DB2. | |||
| 3. | It has no concept of transactions. | It has concept of transactions satisfying ACID properties. | |||
| 4. | It was developed by ELASTIC in 2010. | It was developed by IBM in 1983. | |||
| 5. | It is schema free. | Schema is present in IBM DB2. | |||
| 6. | It has ES-Hadoop connector type map reduce. | It does not have map reduce concept. | |||
| 7. | It is implemented in java. | It is implemented in C and C++ languages. | |||
| 8. | It has Java API, RESTful HTTP/JSON API. | It has ADO.NET, JDBC, ODBC, Xquery, JSON style queries. | |||
| 9. | It is considered less than IBM DB2 in terms of ranking. | It is considered better than Elasticsearch in terms of ranking. | 10. | It accepts all operating systems having JVM. | It supports AIX, HP-UX, Linux, Solaris, Windows, z/OS. |