Udaan Technologies Interview Questions and Answers

Q1. Basic questions about the experience and the product worked on
Add your answer

1st round written test on basic arithmetic questions, english grammar and SQL related questions.
Answers to be marked in question paper for mcqs, and write in additional sheets about SQL queries asked. This test is of 1hr 30 mins. Phones cannot be used so prepare well in advance.

Q1. Self introduction
Add your answer
Q2. Okay with the SLA
Ans. 
SLA stands for Service Level Agreement, which outlines the level of service expected from a vendor.
• SLA defines the agreed upon level of service between a provider and a customer.

• It includes metrics like response time, uptime, and resolution time.

• SLAs are important for ensuring accountability and quality of service.

• Example: An SLA might specify that the vendor will respond to support tickets within 24 hours.
Answered by AI
Add your answer

Q1. What is the difference between DDL and DML?
Ans. 
DDL stands for Data Definition Language and is used to define the structure of database objects. DML stands for Data Manipulation Language and is used to manipulate data within the database.
• DDL is used to create, modify, and delete database objects such as tables, indexes, and views.

• DML is used to insert, update, delete, and retrieve data from database tables.

• Examples of DDL statements include CREATE TABLE, ALTER TABLE...read more
Answered by AI
Add your answer
Q2. How to fetch a employee record with the second highest salary from the employees table?
Add your answer
Q3. What was one of the trickiest incident you have faced and how did you counter it?
Add your answer
Q4. How SQL is divided?
Ans. 
SQL is divided into Data Definition Language (DDL), Data Manipulation Language (DML), Data Control Language (DCL), and Transaction Control Language (TCL).
• Data Definition Language (DDL) - used to define the structure of database objects like tables, indexes, and views. Examples include CREATE, ALTER, DROP.

• Data Manipulation Language (DML) - used to manipulate data stored in the database. Examples include SELECT, INSERT, ...read more
Answered by AI
Add your answer
Q5. How would prepare an emplyees attendance record? Create charts and graphs regarding it.
Ans. 
To prepare an employee's attendance record, I would gather data on their attendance, create charts and graphs to visualize trends and patterns.
• Gather attendance data including dates, times, and reasons for absence or tardiness

• Create a spreadsheet or database to organize the data

• Use software like Excel or Tableau to create charts and graphs showing attendance trends

• Include metrics such as overall attendance rate, late a...read more
Answered by AI
Add your answer
Q6. Difference between SQL and MYSQL
Ans. 
SQL is a standard language for managing databases, while MySQL is a specific open-source relational database management system.
• SQL is a standard language used to interact with databases, while MySQL is a specific database management system.

• SQL is an ANSI (American National Standards Institute) standard language, while MySQL is an open-source relational database management system.

• SQL can be used with various database ma...read more
Answered by AI
Add your answer
Q7. Define joins using examples.
Ans. 
Joins are used to combine rows from two or more tables based on a related column between them.
• Joins are used in SQL to retrieve data from multiple tables based on a related column.

• Common types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.

• Example: INNER JOIN retrieves rows from both tables where the join condition is met.

• Example: LEFT JOIN retrieves all rows from the left table and the matched rows ...read more
Answered by AI
Add your answer

Q1. What is dependency Injection
Ans. 
Dependency Injection is a design pattern where components are given their dependencies rather than creating them internally.
• In Dependency Injection, the dependencies of a component are provided from the outside rather than being created internally.

• This helps in making components more modular, testable, and easier to maintain.

• There are different types of Dependency Injection like Constructor Injection, Setter Injection,...read more
Answered by AI
Add your answer
Q2. What is joins
Ans. 
Joins are used in databases to combine rows from two or more tables based on a related column between them.
• Joins are used to retrieve data from multiple tables based on a related column

• Common types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column
Answered by AI
Add your answer