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Lycatech Services SQL Developer Interview Questions and Answers
Lycatech Services SQL Developer Interview Experiences
1 interview found
Poonthendral Murugesan
I applied via Walk-in and was interviewed in Jan 2024. There was 1 interview round.
(3 Questions)
- Q1. What is Structured Query Language?
- Ans.
Structured Query Language is a standardized programming language used to manage and manipulate databases.
SQL is used to retrieve, insert, update, and delete data in databases.
It is a declarative language, meaning users specify what they want to retrieve or manipulate without needing to specify how to do it.
Common SQL commands include SELECT, INSERT, UPDATE, DELETE, CREATE, and DROP.
Example: SELECT * FROM employees WHER
- Q2. What is joins in SQL?
- Ans.
Joins in SQL are used 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;
- Q3. What is Stored Procedure
- Ans.
Stored Procedure is a precompiled collection of SQL statements that can be executed by calling the procedure name.
Stored Procedures can accept input parameters and return output parameters.
They can be used to encapsulate complex SQL logic for reusability and security purposes.
Stored Procedures can improve performance by reducing network traffic and optimizing query execution.
Example: CREATE PROCEDURE GetEmployeeDetails...
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Anonymous
React redux saga and thunk
Selected
I applied via LinkedIn and was interviewed in Oct 2023. There was 1 interview round.
(4 Questions)
- Q1. All the questions were based on the Java and OOPS concepts.
- Q2. What is multi-processing and multi-threading?
- Ans.
Multi-processing involves running multiple processes simultaneously, while multi-threading involves running multiple threads within a single process.
Multi-processing allows multiple processes to run concurrently, each with its own memory space and resources.
Multi-threading allows multiple threads to run within the same process, sharing the same memory space and resources.
Multi-processing is typically used for CPU-bound...
- Q3. Can we declare the constructor private?
- Ans.
Yes, we can declare the constructor private in a class.
Yes, we can declare the constructor private to prevent instantiation of the class from outside.
Private constructors are commonly used in singleton design pattern implementations.
Example: private MySingleton() {}
- Q4. What is polymorphism?
- Ans.
Polymorphism is the ability of a single function or method to operate on different types of data.
Polymorphism allows objects of different classes to be treated as objects of a common superclass.
There are two types of polymorphism: compile-time (method overloading) and runtime (method overriding).
Example: Inheritance in object-oriented programming languages like Java allows for polymorphism.
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Skills evaluated in this interview
Anu
(2 Questions)
- Q1. Project overview
- Q2. Microservice communication
I applied via Referral and was interviewed in Oct 2023. There was 1 interview round.
(1 Question)
- Q1. Where is Dotnet used?
- Ans.
Dotnet is used for developing web applications, desktop applications, mobile apps, cloud services, and games.
Web applications
Desktop applications
Mobile apps
Cloud services
Games
Need to write the code in the chat
(2 Questions)
- Q1. Higher order components
- Q2. React prop drilling
Interview Preparation Tips
Selected
I applied via Company Website and was interviewed before Feb 2023. There were 2 interview rounds.
Easy test basic knowledge is checked.
(1 Question)
- Q1. Background on what technologies you have worked.
Interview Preparation Tips
I applied via Naukri.com and was interviewed in Aug 2022. There were 2 interview rounds.
1)Asked Intro.
2) Asked to Write a code example "node python developer", after one letter it should be upper case and next letter lower case. Same has to be done for entire string.
(2 Questions)
- Q1. Basic Questions Introduction
- Q2. Old CTC and Expected CTC
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