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Parexel International Java Developer Interview Questions, Process, and Tips
Parexel International Java Developer Interview Experiences
1 interview found
Anonymous
I applied via Naukri.com and was interviewed in Sep 2024. There was 1 interview round.
(5 Questions)
- Q1. Is sql necessary for your project ?
- Ans.
SQL is necessary for most projects involving databases to manage and query data efficiently.
SQL is essential for creating, updating, and querying databases in most projects.
Without SQL, it would be challenging to interact with databases and retrieve specific data.
Examples of SQL commands include SELECT, INSERT, UPDATE, and DELETE.
SQL can help optimize database performance and ensure data integrity.
- Q2. What is Hql ?
- Ans.
HQL stands for Hibernate Query Language, a query language similar to SQL but used for Hibernate ORM framework.
HQL is used to perform database operations in Hibernate ORM framework.
It is similar to SQL but operates on Hibernate objects instead of database tables.
HQL queries are written in Hibernate-specific syntax.
Example: 'FROM Employee e WHERE e.department = :dept'
HQL queries are translated into SQL queries by Hiberna
- Q3. What are views ?
- Ans.
Views in Java are user interface components that display data from a model in a specific format.
Views are used to represent the user interface in Java applications.
They display data from a model in a visually appealing format.
Examples include buttons, text fields, labels, and checkboxes.
- Q4. What are cross joins ?
- Ans.
Cross joins are a type of join operation in SQL that combines each row from one table with each row from another table.
Cross joins do not have a join condition specified, resulting in a Cartesian product of the two tables.
They can be used when you want to combine every row from one table with every row from another table.
Cross joins can lead to a large result set if the tables being joined have many rows.
- Q5. Difference between delete and truncate
- Ans.
Delete removes rows one by one, while truncate removes all rows at once.
Delete is a DML command, while truncate is a DDL command.
Delete can be rolled back, while truncate cannot be rolled back.
Delete fires triggers, while truncate does not fire triggers.
Delete is slower as it logs individual row deletions, while truncate is faster as it logs the deallocation of the data pages.
Interview Preparation Tips
- SQL
- Advanced Java
- Spring Framework
Skills evaluated in this interview
Interview questions from similar companies
Java Developer Interview Questions & Answers
Aragen Life Sciences
kishor kumar
posted on 17 Jul 2024
Selected
I applied via Naukri.com and was interviewed in Jun 2024. There were 2 interview rounds.
Normal question of reasoning and maths
Sorting arraylist , sorted map
Interview Preparation Tips
Coding Test- Average standard questions
(2 Questions)
- Q1. API related questions
- Q2. Authentication/Authorization questions
(2 Questions)
- Q1. Performance improvement related questions
- Q2. SQL query given
(1 Question)
- Q1. Normal HR discussion
Interview Preparation Tips
Array, String are core point for interview, html css , sql will be plus point
(1 Question)
- Q1. What if you stuck in middle of assign task? how you gonna tackle it
- Ans.
If stuck in the middle of an assigned task, I would follow a systematic approach to tackle it.
Analyze the problem and identify the specific issue causing the blockage
Break down the task into smaller subtasks and prioritize them
Seek help or guidance from colleagues or seniors if necessary
Research and gather relevant information or resources to overcome the obstacle
Experiment with different solutions and evaluate their e...
Interview Preparation Tips
Java Developer Interview Questions & Answers
Aragen Life Sciences
kishor kumar
posted on 17 Jul 2024
Selected
I applied via Naukri.com and was interviewed in Jun 2024. There were 2 interview rounds.
Normal question of reasoning and maths
Sorting arraylist , sorted map
Interview Preparation Tips
(1 Question)
- Q1. Altered the skills and question's from Resume
(1 Question)
- Q1. Multithreading and Method Overriding
(1 Question)
- Q1. Asynchronous JavaScript
(1 Question)
- Q1. It's all about figures
(1 Question)
- Q1. Basic Javascript and React related questions. 1 DSA and simple System design question
(2 Questions)
- Q1. Basic of language and angular
- Q2. Oops angular mvc
(2 Questions)
- Q1. About introduction and project
- Q2. Introduce yourself
(1 Question)
- Q1. Libraries that you commonly use in python Case study questions
A few scenarios that were provided and asked how would I approach them
(1 Question)
- Q1. The basic tell me something about your self and expectations
Interview Preparation Tips
Varsha Kumari
Selected
I applied via Naukri.com and was interviewed before Jul 2023. There were 3 interview rounds.
Aptitude test was of moderate level.
One coding question was given.
(2 Questions)
- Q1. DSA questions were asked
- Q2. Javascript questions
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