Alstrong Enterprises Interview Questions and Answers

SQL Server is a relational database management system developed by Microsoft.

• SQL Server is a software product used to manage and store data in a relational database.

• It provides a platform for creating, managing, and querying databases.

• SQL Server supports SQL (Structured Query Language) for interacting with the database.

• It offers various features like data storage, data retrieval, data manipulation, and data security.

• SQL Server can be used for developing and deploying database...read more

Object oriented programming is a programming paradigm based on the concept of objects, which can contain data and code to manipulate that data.

• Objects are instances of classes, which define the structure and behavior of the objects.

• Encapsulation is a key principle, where data is kept private within the object and only accessible through methods.

• Inheritance allows classes to inherit attributes and methods from other classes.

• Polymorphism allows objects of different classes to b...read more

Static constructor is a special type of constructor in a class that is called only once when the class is loaded into memory.

• Static constructor is used to initialize static data members of a class.

• It is automatically called by the .NET Framework when the class is first loaded.

• Static constructor does not take any parameters and cannot be called explicitly.

• Example: public class MyClass { static MyClass() { // initialization code } }

SOLID principles are a set of five design principles that help make software designs more understandable, flexible, and maintainable.

• Single Responsibility Principle (SRP) - A class should have only one reason to change.

• Open/Closed Principle (OCP) - Software entities should be open for extension but closed for modification.

• Liskov Substitution Principle (LSP) - Objects of a superclass should be replaceable with objects of its subclasses without affecting the functionality.

• Inter...read more

Dependency injection is a design pattern in which components are given their dependencies rather than creating them internally.

• Allows for easier testing by providing mock dependencies

• Promotes loose coupling between components

• Improves code reusability and maintainability

• Commonly used in frameworks like Spring in Java

A view is a virtual table that is based on the result of a query. It is used to simplify complex queries and provide a logical representation of data.

• Views are created by selecting columns from one or more tables and can be used like a table in queries.

• They do not store any data themselves but provide a way to access and manipulate data from underlying tables.

• Views can be used to restrict access to certain columns or rows of a table.

• They can also be used to combine data from ...read more