HCLTech Supply Chain Executive Interview Questions and Answers

The 5 basic concepts of OOP are encapsulation, inheritance, polymorphism, abstraction, and class.

• Encapsulation: bundling of data and methods that manipulate the data within a single unit.

• Inheritance: creating new classes from existing ones, inheriting their properties and methods.

• Polymorphism: ability of objects to take on multiple forms or behaviors.

• Abstraction: hiding the complexity of a system and only showing the n...read more

5 basic concepts of OOPs are encapsulation, inheritance, polymorphism, abstraction, and class.

• Encapsulation: bundling of data and methods that manipulate the data within a single unit.

• Inheritance: ability of a class to inherit properties and characteristics from its parent class.

• Polymorphism: ability of objects to take on multiple forms or have multiple behaviors.

• Abstraction: hiding of complex implementation details an...read more

To get the second to last element from a SQL table, use the OFFSET-FETCH clause.

• Use the ORDER BY clause to sort the table in descending order.

• Use the OFFSET-FETCH clause to skip the last row and fetch the second to last row.

• Example: SELECT column_name FROM table_name ORDER BY column_name DESC OFFSET 1 ROWS FETCH NEXT 1 ROWS ONLY;