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Understanding ORMs - The Bridge Between Code and Databases

DEV Community: backend·Vipul·3 days ago
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When building applications, developers constantly interact with databases -- storing users, fetching orders, updating products, and much more. But writing raw SQL queries everywhere can become repetitive, difficult to maintain, and error-prone. This is where ORMs(Object Relational Mappers) come in. What is an ORM? An ORM is a tool or framework that allows developers to interact with databases using programming language objects instead of writing raw SQL queries. Instead of this: SELECT * FROM users WHERE id = 1 ; Enter fullscreen mode Exit fullscreen mode You can write something like: User user = userRepository . findById ( 1 ); Enter fullscreen mode Exit fullscreen mode The ORM automatically converts your code into SQL queries behind the scenes. Why ORMs Exist Applications are written in object-oriented languages like Java, Python, or C#, while databases store data in tables and rows. ORMs act as a translator between these two worlds.…

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