ITC Infotech System Administrator Interview Questions and Answers

Dictionary is a collection of key-value pairs in Python.

• Keys must be unique and immutable.

• Values can be of any data type.

• Access values using keys.

• Add or modify values using keys.

• Use dict() constructor or {} to create a dictionary.

• Example: {'name': 'John', 'age': 30}

• Example: dict(name='John', age=30)

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

• 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 a supe...read more

SQL is a programming language used to manage and manipulate relational databases.

• SQL stands for Structured Query Language

• It is used to create, modify, and query databases

• Common commands include SELECT, INSERT, UPDATE, and DELETE

• SQL is used in a variety of industries, including finance, healthcare, and e-commerce

DBMS stands for Database Management System. It is a software system that allows users to define, create, maintain and control access to databases.

• DBMS is used to manage large amounts of data efficiently.

• It provides a way to store, retrieve and manipulate data in a structured way.

• Examples of DBMS include MySQL, Oracle, and Microsoft SQL Server.