What are the advantages of using views?
Short answer: Simplifies Complex Queries: Views can encapsulate complex queries, making them reusable and easier to manage.
Explain a bit more
Data Abstraction: Views abstract the underlying table structure and allow for easier access to the data without revealing the full database schema. Security: By granting access to a view instead of a table, you can restrict access to sensitive data and only expose the columns or rows that are necessary. Consistency: A view can standardize how data is accessed across multiple queries or applications, ensuring consistent results. Reduced Redundancy: Rather than writing the same complex query multiple times, you can create a view to encapsulate it and reuse the view in different queries.
Real-world example (ShopNest)
ShopNest’s SQL Server database stores customers, products, and orders. Good indexes and clear foreign keys keep checkout queries fast and safe.
Say this in the interview
- Define — one clear sentence (the short answer above).
- Example — relate it to a project like ShopNest or your real work.
- Trade-off — when you would not use it.
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