Query Languages are specialized programming languages used to request information from databases and manipulate that data. Coursera's Query Language catalogue teaches you how to interact with databases, retrieve, insert, update, delete data and manage database schema. You'll learn the fundamentals of Structured Query Language (SQL), NoSQL, GraphQL, and other widely used query languages. You'll acquire the skills to design and execute complex queries, optimize database performance, and manage large-scale data systems, making you invaluable in roles such as database administrator, data analyst, or backend developer.