What is SQL used for?

SQL, or Structured Query Language, is primarily used for managing and manipulating relational databases. It allows users to perform a variety of operations such as querying data, updating records, inserting new data, and deleting data from databases. This functionality makes SQL essential for tasks involving data retrieval and management within relational database management systems (RDBMS).

By providing a clear syntax and a structured way to interact with databases, SQL enables users to manage large sets of structured data efficiently. It is widely used in various applications, from simple data retrieval to complex database transactions, making it a foundational tool in data analytics and database management environments.

The other options do not align with the primary purpose of SQL. Conducting market research involves analyzing customer data, trends, and market dynamics, which may often use SQL for data retrieval but is not its main function. Designing user interfaces pertains to creating software applications, which does not involve SQL. Analyzing unstructured data relates to working with data that doesn’t have a predefined data model, such as text or multimedia content, which typically requires different tools and techniques rather than SQL, which is designed for structured data.