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pretty surface level, just explained it's a language for querying and managing relational databases.
Start with a clear, concise definition of SQL as a declarative language for managing relational databases, then briefly explain its core capabilities (querying, data manipulation, schema definition, access control). Connect it to the role by mentioning how SQL is used in practice at Microsoft-scale systems for data modeling and performance trade-offs.
Pro tip: Emphasize that SQL is declarative—you specify what you want, not how to get it—and that this abstraction enables the query optimizer to make execution decisions, which is crucial for performance tuning and trade-offs.
State that SQL (Structured Query Language) is a standard domain-specific language for managing and querying data in relational database management systems (RDBMS).
Briefly outline the main categories: DQL (SELECT), DML (INSERT, UPDATE, DELETE), DDL (CREATE, ALTER, DROP), and DCL (GRANT, REVOKE).
Explain that SQL is declarative: you describe the desired result, and the database engine determines the best execution plan, which is key for optimization.
Discuss how SQL supports normalization, indexing, and joins, and how these involve trade-offs between query performance, storage, and complexity.
Mention Microsoft's SQL-based services like Azure SQL Database and SQL Server, and how SQL skills are essential for building scalable, data-driven applications.
AI-generated suggestions, not part of the candidate's original notes. May be inaccurate — verify before relying on them.