TRooTech Business Solutions Python and Django Developer Interview Questions and Answers

Method overloading is having multiple methods with the same name but different parameters. Method overriding is having a method in a subclass with the same name and parameters as in the superclass.

• Method overloading is used to provide different ways of calling the same method with different parameters.

• Method overriding is used to provide a specific implementation of a method in a subclass that is already defined in the...read more

Primary key is a unique identifier for each record in a database table.

• Primary key ensures that each record in a table is unique.

• It is used to establish relationships between tables.

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

• It cannot have null values.

• Examples of primary keys are social security numbers, email addresses, and employee IDs.