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Can you explain how indexing works in databases and why it’s important for performance?

Indexing in databases creates a data structure that improves the speed of data retrieval operations. It allows the database to find rows with specific column values quickly, rather than scanning…

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Can you explain the importance of properly naming your database tables and columns according to Clean Code principles?

Proper naming of database tables and columns is crucial because it enhances readability and maintainability. Good names provide clear context about the data, making it easier for developers to understand…

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Can you explain what Django’s ORM is and how it interacts with a database?

Django’s ORM, or Object-Relational Mapping, allows developers to interact with databases using Python objects instead of SQL. It abstracts the database interactions, which means you can create, retrieve, update, and…

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Can you explain how ActiveRecord manages database connections in a Ruby on Rails application?

ActiveRecord uses a connection pool to manage database connections in a Ruby on Rails application. When a request is made, ActiveRecord checks out a connection from the pool, executes the…

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Can you explain what a primary key is in SQL and why it’s important?

A primary key in SQL is a unique identifier for a record in a table. It’s important because it ensures that each record can be uniquely retrieved and is critical…

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How would you design a GraphQL schema to efficiently handle complex queries involving multiple nested resources while ensuring database performance?

To efficiently handle complex queries in GraphQL, I would start by defining a clear and structured schema that uses appropriate field types and relationships. Leveraging batching and caching techniques with…

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Can you explain the differences between primary and foreign keys in a database and their importance in data integrity?

A primary key uniquely identifies a record in a table, while a foreign key establishes a link between two tables by referencing a primary key in another table. They are…

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How would you design a Vue.js application that effectively interacts with a database, ensuring both performance and security are optimized?

To design a Vue.js application that interacts with a database, I would implement a RESTful API or GraphQL layer to manage data flow. This separates client and server concerns, improving…

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How would you design a prompt engineering system that optimally retrieves and utilizes data from a relational database to enhance model performance?

To optimize prompt engineering with a relational database, I’d focus on efficient query design that minimizes response time and maximizes data relevance. Implementing caching strategies to store frequently accessed data…

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Can you explain what ACID stands for in the context of database transactions and why it is important?

ACID stands for Atomicity, Consistency, Isolation, and Durability. These properties ensure that database transactions are processed reliably, which is crucial for maintaining data integrity, especially in multi-user environments.

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