Just adding a real poll for Joaqin's post so we can get the counts
Oracle is the best RDBMS database. this is relational database management system and easy for use.
The Oracle RDBMS stores data logically in the form of tablespaces and physically in the form of data files. The Oracle DBMS can store and execute store procidures and funcions within itself. PL/SQL (Procedural and Structural Query Langauage), or the object-oriented language Java can invoke such code objects and/or provide the programming structures for writing them. the Oracle RDBMS typically relies on a group of processes running simultaneously in the background and interacting to monitor and expedite database operations. all tables are related to each other.