'SQL (Structured Query Language)' is a prominent language used for interacting with and managing data in relational databases. Primarily, it facilitates querying, updating, inserting, and deleting database records. The structured format of SQL makes it an essential component in database management and operations.

Originating in the 1970s at IBM, SQL has established itself as a fundamental standard in relational database management. Its accessibility and practicality have garnered widespread usage among data professionals, including database administrators, developers, and analysts. SQL serves as a versatile tool for database interactions, capable of handling both simple data queries and complex data operations.

Notable for its declarative nature, SQL allows users to specify the data they need in a straightforward manner, without the intricacies of database navigation. This attribute contributes to its user-friendly aspect, simplifying interactions with complex database systems. SQL's application spans various domains, from basic web applications to intricate data-intensive environments.

SQL has continuously evolved, incorporating advancements like transaction control, robust error handling, and efficient query optimization. Despite the emergence of various SQL dialects such as MySQL, PostgreSQL, and Microsoft SQL Server, each variant maintains core SQL principles, offering unique features and functionalities.

To sum up, SQL's significance in data management is unparalleled. As a key language for relational database operations, its standardized framework and broad implementation render it a vital expertise for data-oriented professionals across multiple industries.