What are PostgreSQL, MySQL and Oracle Database?
Options
- Programming languages that are used for writing backend code
- Database management systems: software that stores and queries data (Correct option)
- Web servers that are used for serving the pages of a site
- Operating systems that are used on the servers of a company
Answer
Database management systems (DBMS): software that stores data and answers queries
Why
A DBMS is the program that manages a database: it stores the data, runs your queries and enforces the rules.
Those three are relational DBMS: they store data in tables and you talk to them with SQL.
When people say 'the database', they usually mean the data plus the DBMS that runs it.
Remember
PostgreSQL, MySQL, Oracle = database software.