VHS Consulting Interview Questions and Answers

ASP.NET is a web development framework while ADO.NET is a data access technology for connecting to databases.

• ASP.NET is used for building web applications, while ADO.NET is used for accessing and manipulating data from databases.

• ASP.NET provides a framework for creating dynamic web pages, handling user input, and managing state, while ADO.NET provides a set of classes for interacting with databases.

• ASP.NET includes features like server controls, authentication, and caching, w...read more

Functions return a value while stored procedures do not.

• Functions are used to perform a specific task and return a value to the caller.

• Stored procedures are used to execute a set of SQL statements and do not return a value.

• Functions can be used in SQL statements while stored procedures cannot.

• Functions can be called from within stored procedures.

• Functions are deterministic while stored procedures may not be.

• Functions cannot modify the database state while stored procedures ca...read more

Interface is a contract that defines the methods a class must implement. Inheritance is the ability of a class to inherit properties and methods from another class.

• Interface is used to achieve abstraction and multiple inheritance in Java.

• Inheritance allows code reuse and promotes code organization.

• Overloading is having multiple methods with the same name but different parameters.

• Overriding is providing a different implementation of a method in a subclass.

• Overloading is resolv...read more

Explaining SQL server functions and stored procedures

• DELETE removes specific rows from a table, TRUNCATE removes all rows from a table, DROP removes a table from the database

• Stored procedures are precompiled SQL statements that can be reused, improving performance and security

• Functions return a single value, while stored procedures can return multiple values or none at all

• Stored procedures can also have input and output parameters

• Advantages of stored procedures include improv...read more

List is mutable, tuple is immutable in Python.

• Lists are mutable, meaning their elements can be changed after creation.

• Tuples are immutable, meaning their elements cannot be changed after creation.

• Lists are defined using square brackets [], tuples using parentheses ().

• Lists are typically used for collections of similar items, tuples for fixed collections of dissimilar items.

Generators in Python are functions that allow you to iterate over a sequence of items without storing them all in memory at once.

• Generators are created using a function with 'yield' instead of 'return'.

• They are used to generate a sequence of values lazily, one at a time.

• Generators are memory efficient as they do not store all values in memory at once.

• Example: def my_generator(): for i in range(5): yield i

• Example: gen = my_generator() print(next(gen)) # Output: 0