Innosolv Consultancy Services Junior Developer Interview Questions and Answers

Q1. What is SQL & DDL
Ans. 
SQL is a programming language used to manage and manipulate relational databases. DDL is a subset of SQL used to define database schema.
• SQL stands for Structured Query Language

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

• DDL stands for Data Definition Language

• It is used to define the structure of the database

• DDL commands include CREATE, ALTER, and DROP

• Example: CREATE TABLE students (id INT, name VARCHAR(50), age IN...read more
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Q2. What are Joins used in SQL
Ans. 
Joins are used in SQL to combine data from two or more tables based on a related column.
• Joins are used to retrieve data from multiple tables in a single query

• There are different types of joins such as inner join, left join, right join, and full outer join

• Joins are based on a related column between the tables

• Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column
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Q3. What is TCL in SQL
Ans. 
TCL is not related to SQL. It stands for Tool Command Language and is used for scripting and automation.
• TCL is a scripting language used for automation and testing

• It is not related to SQL, which is a language used for managing relational databases

• TCL can be used to write scripts for various applications, including database management systems

• Example: TCL can be used to automate tasks in Oracle database management system
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There will be one hour aptitude and coding based tests.

Q1. How to do Email validation in javascript
Ans. 
Email validation in JavaScript involves checking if the input follows the correct email format.
• Use a regular expression to check if the email follows the correct format

• Check for the presence of '@' symbol and at least one '.' after it

• Validate the email using built-in JavaScript functions or libraries like 'validator.js'
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Q2. Core java related questions.
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Aptitudes Basic aptitude Logical Analytical

Oops concepts,Methods,class,inheritance,interface

General apti and java mcqs

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Q1. General questions.. Background detail
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