Which of the following is a function of Structured Query Language (SQL)?

Structured Query Language (SQL) is a specialized programming language designed for managing and manipulating data stored in relational databases. Its primary function is to allow users to perform a variety of operations on the data, including querying data, inserting new records, updating existing records, and deleting data. SQL enables interaction with the database by allowing users to formulate queries that retrieve specific information based on various conditions.

Through SQL, users can create and manage database structures, define data schemas, and enforce data integrity. Additionally, it provides powerful capabilities for data manipulation and retrieval, making it essential for data analysis and reporting within relational database management systems (RDBMS).

While the management of complex networks, visualization of business processes, and data mining are all important aspects of information systems, they are not functions of SQL. Instead, these tasks might be performed using other specialized tools and technologies. SQL is specifically tailored for data interaction within the context of relational databases, which is why it is the correct choice in this context.