Infosys Associate Software Developer Interview Questions and Answers

A table in SQL is a collection of related data organized in rows and columns.

• Tables are used to store data in a structured way.

• Each table has a unique name and consists of columns and rows.

• Columns define the type of data that can be stored in them.

• Rows represent individual records in the table.

• Tables can be queried using SQL commands to retrieve, insert, update or delete data.

SDLC stands for Software Development Life Cycle, which is a process used to design, develop, and test software.

• SDLC is a structured approach to software development.

• It consists of several phases including planning, analysis, design, implementation, testing, and maintenance.

• Each phase has its own set of deliverables and objectives.

• The goal of SDLC is to produce high-quality software that meets the needs of the end-users...read more

Java has eight primitive datatypes and reference types.

• Java has eight primitive datatypes: byte, short, int, long, float, double, char, and boolean.

• Reference types include classes, interfaces, arrays, and enums.

• Primitive datatypes are passed by value, while reference types are passed by reference.

• Autoboxing and unboxing allow primitive datatypes to be used as reference types and vice versa.

The datatypes in C++ include fundamental types (int, float, bool), derived types (arrays, pointers, references), and user-defined types (classes, structures, unions).

• Fundamental types: int, float, bool

• Derived types: arrays, pointers, references

• User-defined types: classes, structures, unions

Python has several built-in datatypes including integers, floats, strings, booleans, lists, tuples, and dictionaries.

• Integers are whole numbers without decimals

• Floats are numbers with decimals

• Strings are sequences of characters

• Booleans are either True or False

• Lists are ordered collections of items

• Tuples are ordered, immutable collections of items

• Dictionaries are unordered collections of key-value pairs