What role does a database administrator primarily focus on?

The primary focus of a database administrator (DBA) is managing database systems. This role involves a range of tasks that ensure the performance, security, and availability of databases. A DBA is responsible for installing and configuring database management systems, monitoring database performance, tuning queries for efficiency, performing backups, restoring data, and ensuring that data integrity and security are maintained. Additionally, they might implement access controls and develop policies for data management.

In contrast, developing client-side scripts pertains to creating code that runs in the user's browser, such as JavaScript. This is typically not a function of a DBA, who deals more directly with data rather than presentation or user interface. Designing website layouts also focuses on the visual and structural aspects of web pages, which falls outside the DBA’s responsibilities. Writing server-side code involves creating applications that run on the server, managing how data is processed and retrieved, but again, this is a separate function from managing the database systems directly. Thus, the responsibilities of a DBA are distinct and specific to the effective management of databases.