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DBMS Easy technical

Q1. What is the difference between a primary key and a foreign key?

A primary key uniquely identifies each row in a table. It must be unique and not null, and a table has at most one. It may be a single column or a composite of several, a...

0 Answer

TypeScript Medium technical

Q2. Explain generics and give a realistic use case.

Generics let you write code that works over many types while preserving the relationship between input and output types. ```ts function first(items: T[]): T | undefined {...

1 Answer

C# Medium technical

Q3. How do generics and constraints work in C#?

Generics let you write type-safe, reusable code without boxing or casts. The type parameter is resolved at compile time, and the JIT specialises for value types while sha...

0 Answer