10+ Valcore Foods Interview Questions and Answers

Primary key uniquely identifies each record in a table. It cannot be null and there can be only one primary key.

• Primary key ensures each record in a table is unique

• Primary key cannot have null values

• Only one primary key can be defined for a table

• Primary key can be a single column or a combination of columns

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

• Abstract class can have constructors, fields, and methods, while interface cannot have any implementation.

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

• Abstract classes are used to define a common base class for related classes, while interfaces are used to define a contract for classes to implement.

• Example: Abstract class 'Shape' ...read more

Components of Dot Net Framework include Common Language Runtime (CLR), Class Library, and ASP.NET.

• Common Language Runtime (CLR) provides environment for executing .NET programs

• Class Library provides reusable code for common programming tasks

• ASP.NET is a web application framework for building dynamic web sites and web applications

VB.Net is a programming language while MVC is a design pattern for organizing code in web applications.

• VB.Net is a programming language used to develop applications, while MVC is a design pattern used to organize code in web applications.

• VB.Net is a part of the .NET framework, while MVC is a design pattern that separates an application into three main components: Model, View, and Controller.

• VB.Net can be used with or without the MVC design pattern, depending on the project re...read more

Char is fixed length data type while varchar is variable length data type in SQL.

• Char stores fixed length strings, while varchar stores variable length strings.

• Char is padded with spaces to reach fixed length, while varchar does not pad with spaces.

• Char is faster for fixed length data, while varchar is more flexible for variable length data.

The versions of Dot Net include .NET Framework, .NET Core, and .NET 5.

• .NET Framework is the original version of Dot Net, primarily used for Windows applications.

• .NET Core is a cross-platform version of Dot Net, used for developing applications that can run on Windows, macOS, and Linux.

• .NET 5 is the latest version of Dot Net, which combines the features of .NET Core and .NET Framework.

• Other versions include .NET Standard, which is a set of APIs that all .NET implementations mu...read more

Inheritance is a concept in object-oriented programming where a class inherits properties and behaviors from another class.

• Types of inheritance: Single inheritance, Multiple inheritance, Multilevel inheritance, Hierarchical inheritance, Hybrid inheritance

• Example: Class B inheriting from Class A: class B : A {}

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

• LINQ provides a set of standard query operators that allow querying data from collections, databases, XML, and more.

• Types of LINQ include LINQ to Objects, LINQ to SQL, LINQ to XML, and LINQ to Entities.

• LINQ queries are written in C# and are executed at runtime, allowing for more flexibility and readability in code.

• Example: var result = from num in n...read more

Object Oriented Programming is a programming paradigm based on the concept of objects, which can contain data and code.

• OOP focuses on creating objects that interact with each other to solve problems

• Encapsulation, inheritance, and polymorphism are key principles of OOP

• Examples of OOP languages include Java, C++, and C#

Dot Net Framework is a software framework developed by Microsoft that provides a controlled programming environment for developing and running applications.

• Developed by Microsoft

• Provides a controlled programming environment

• Used for developing and running applications

Types of classes in programming include abstract classes, concrete classes, sealed classes, static classes, and nested classes.

• Abstract classes cannot be instantiated and may contain abstract methods.

• Concrete classes can be instantiated and provide implementations for all methods.

• Sealed classes cannot be inherited.

• Static classes cannot be instantiated and contain only static members.

• Nested classes are defined within another class.

HTTP status codes are standardized codes used to indicate the result of a HTTP request.

• HTTP status codes range from 100 to 599

• 1xx - Informational responses

• 2xx - Success responses (e.g. 200 OK)

• 3xx - Redirection messages

• 4xx - Client error responses (e.g. 404 Not Found)

• 5xx - Server error responses (e.g. 500 Internal Server Error)

Filters in MVC are used to perform logic before or after an action method is executed.

• Filters are attributes that can be applied to controller actions or entire controllers.

• They can be used for authorization, logging, exception handling, etc.

• Examples include Authorize, OutputCache, HandleError filters.

MVC is a software architectural pattern for implementing user interfaces.

• MVC separates an application into three main components: Model, View, and Controller.

• Model represents the data and business logic of the application.

• View represents the user interface that displays the data to the user.

• Controller acts as an intermediary between Model and View, handling user input and updating the Model.

• MVC helps in achieving separation of concerns, making the code more organized and easi...read more

Like operator is used in SQL to search for a specified pattern in a column.

• Like operator is used with the WHERE clause in SQL queries.

• It allows for pattern matching using wildcard characters like % and _.

• Example: SELECT * FROM table_name WHERE column_name LIKE 'pattern';