Decisive Analytical Systems Interview Questions and Answers

C# is a programming language developed by Microsoft for building a variety of applications on the .NET framework.

• Object-oriented programming language

• Supports features like inheritance, polymorphism, and encapsulation

• Has a rich set of libraries and tools for development

• Used for developing web applications, desktop applications, and games

• Example: defining a class in C# - 'public class MyClass {}'

Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.

• Abstract class can have constructors, fields, and non-abstract methods, while interface cannot.

• A class can implement multiple interfaces but can only inherit from one abstract class.

• Abstract classes are used to define a common behavior for subclasses, while interfaces are used to define a contract for classes ...read more

LINQ (Language Integrated Query) is a feature in C# that allows for querying data from different data sources using a SQL-like syntax.

• LINQ allows for querying data from collections, databases, XML, and more.

• It provides a set of standard query operators like Where, Select, OrderBy, etc.

• LINQ queries are written in a declarative syntax and are type-safe.