A Database Designer is a professional responsible for planning, designing, and structuring databases to efficiently store, retrieve, and manage data. They focus on creating database models that are optimized for performance, scalability, and maintainability, ensuring that data is organized in a way that meets the needs of a business or project.

Database Designers work with relational (e.g., MySQL, PostgreSQL, Oracle) or NoSQL (e.g., MongoDB, Cassandra) database management systems, and they create entity-relationship (ER) diagrams, define schema structure, and establish relationships between data entities. They also ensure data integrity, security, and consistency, setting up constraints like primary keys, foreign keys, and indexing strategies.

Their role often involves analyzing business requirements, designing normalized or denormalized databases, creating stored procedures, and optimizing queries for speed. Database Designers work closely with developers, analysts, and IT teams to ensure that the database architecture supports application functionality and future growth.