What is the primary role of a database administrator (DBA)?

The primary role of a database administrator (DBA) is managing and securing databases. This involves a range of responsibilities, including the installation, configuration, and upgrading of database management systems (DBMS), as well as ensuring the performance, security, and availability of databases.

DBAs are tasked with monitoring database systems for efficiency and performance, implementing backup and recovery procedures to prevent data loss, and enforcing data security measures to protect sensitive information. Their role is critical in maintaining the integrity and privacy of the data housed within the database management systems.

While designing user interfaces is an important aspect of application development, it falls within the realm of software developers rather than DBAs. Developing business strategies is typically the responsibility of business analysts or leadership teams, focusing on organizational goals and market positioning. Data analysis, while often a function associated with database work, is primarily conducted by data analysts or business analysts who interpret data to inform decisions, rather than by those who manage the database systems themselves. Thus, the role of the DBA is essential for ensuring that databases are well-managed and secure, making option B the correct choice.