Programmer Analyst II Interview Questions and Answers

Functions in SQL Server are pre-defined or user-defined routines that can accept parameters, perform actions, and return a value.

• Functions can be used to perform calculations, manipulate data, or return specific information.

• There are different types of functions in SQL Server such as scalar functions, table-valued functions, and aggregate functions.

• Examples of functions include GETDATE() to retrieve the current date and time, LEN() to get the length of a string, and SUM() to ...read more

Interface defines only method signatures while abstract class can have method implementations.

• Interface cannot have method implementations, only method signatures

• Abstract class can have method implementations along with abstract methods

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

• Interfaces are used to achieve multiple inheritance in Java