Oracle/DB

A database management system is a computer software application that interacts with the user, other applications, and the database itself to capture and analyse data. A general-purpose DBMS is designed to allow the definition, creation, querying, update, and administration of databases. DBMS can be used to manage transactional databases, such as HR systems, banking systems and so on. Database administrators (DBAs) use specialised software to store and organise data. The role may include capacity planning, installation, configuration, database design, migration, performance monitoring, security, troubleshooting, as well as backup and data recovery. You can do Oracle DBA course and certification after 12th but the chances of getting a job in medium or large size jobs are very poor unless you complete minimum graduation degree such as BBA. It is my sincere advise to you to pursue graduation degree first, else you will face challenges and disappointments while searching for a job.