Fusion in Oracle typically refers to Oracle Fusion Middleware and Oracle Fusion Applications. Oracle Fusion Middleware is a platform that offers a set of services and tools for developing, deploying, and managing applications, while Oracle Fusion Applications are a suite of enterprise resource planning (ERP) and business software applications.

Oracle Fusion Middleware:

1. Middleware Platform: Oracle Fusion Middleware serves as a middleware platform that connects different software applications, databases, and services within an enterprise.
2. Integration: It provides tools and services for integrating various applications and systems, enabling them to work together seamlessly.
3. SOA (Service-Oriented Architecture): Oracle Fusion Middleware supports the development of applications using a service-oriented architecture, which promotes reusability and flexibility.
4. Security: It includes security features to protect data and applications.
5. Development Tools: Fusion Middleware offers development tools and frameworks for building custom applications.

Oracle Fusion Applications:

1. Enterprise Software: These are a suite of enterprise-level software applications offered by Oracle, covering various areas like financials, human resources, supply chain management, and customer relationship management.
2. Cloud-Based: Oracle Fusion Applications are designed to be delivered as cloud-based SaaS (Software as a Service) solutions, although on-premises deployments are also possible.
3. Modern Architecture: They are built on a modern architecture and offer features such as mobile access, social collaboration, and business intelligence.

It’s important to note that the term “Fusion” in Oracle’s context is associated with these specific product lines and not a generic concept of fusion in databases or technology. If you have a more specific question about Oracle Fusion Middleware or Oracle Fusion Applications, please feel free to ask.