Oracle SQL is Oracle's implementation of the SQL query language standard used for querying and manipulating data in Oracle Database.

PL/SQL is Oracle's procedural language extension to SQL and allows for stored functions, procedures, packages and triggers to be written within the database.

Oracle Database runs on Windows, Linux and Unix systems. It is supported on-premises or in the cloud using Oracle Cloud Infrastructure.

Security features include user authentication, access control lists, encrypted passwords, networking encryption, auditing and data redaction capabilities.

Real Application Clusters (RAC) provides cluster database capabilities for high availability and scalability across multiple cluster nodes/instances.

For large, mission-critical deployments where enterprises require highest levels of performance, reliability, scalability and support from a leading proprietary solution.