Oracle Database is a widely used relational database management system (RDBMS) developed by Oracle Corporation. It is designed to store, manage, and retrieve large amounts of data efficiently. Oracle Database supports SQL (Structured Query Language) for querying and managing data and provides advanced features like data security, backup and recovery, high availability, and scalability. It is commonly used in enterprise applications for managing critical business data, offering robust performance and support for complex queries, transactions, and large-scale databases. Oracle also supports cloud-based and hybrid environments, making it versatile for various business needs.