Oracle Lead Engineer Interview Questions and Answers

Write java coding for solutions providesd?

Q1. What is sql? And what is use on select?
Ans. 
SQL is a programming language used for managing and manipulating databases. The SELECT statement is used to retrieve data from a database.
• SQL stands for Structured Query Language

• It is used to communicate with databases to perform tasks such as querying, updating, and deleting data

• The SELECT statement is used to retrieve data from a database

• Example: SELECT * FROM table_name WHERE condition;
Answered by AI
Add your answer
Q2. Diff between inner join and outer join?
Ans. 
Inner join returns only the rows that have matching values in both tables, while outer join returns all rows from both tables.
• Inner join is used to retrieve rows from both tables that have matching values based on a specified condition.

• Outer join is used to retrieve all rows from both tables, with matching rows from both tables where available.

• Examples: Inner join - SELECT * FROM table1 INNER JOIN table2 ON table1.id =...read more
Answered by AI
Add your answer

Q1. Salary expectation
Add your answer
Q2. Detail about roal
Add your answer

Q1. Synchronisation primitives in rust?
Ans. 
Rust provides various synchronisation primitives like Mutex, RwLock, Atomic types, etc.
• Mutex: Provides exclusive access to data

• RwLock: Allows multiple readers or one writer at a time

• Atomic types: Provide atomic operations on primitive types
Answered by AI
Add your answer
Q2. Write a rust code to read a file reverse the contents & write it back to file. Using multiple threads
Ans. 
Rust code to read a file, reverse contents, and write back using multiple threads
• Use std::fs to read and write files

• Create multiple threads to handle reading, reversing, and writing operations

• Use channels to communicate between threads
Answered by AI
Add your answer

DSA question on Depth first search. & other on reverse the strings.

Q1. OOPS hibernate
Add your answer
Q2. String Angular javascript node js
Add your answer

Q1. Work invironmet
Ans. 
Collaborative, fast-paced, innovative work environment with emphasis on teamwork and continuous learning.
• Open communication and collaboration among team members

• Fast-paced and dynamic work environment

• Emphasis on innovation and creativity

• Teamwork and support for continuous learning and growth
Answered by AI
Add your answer
Q2. My thoughts ,what is work process
Add your answer

Mostly Python based coding questions

Q1. SQL and python based questions
Add your answer
Q2. Statistics questions as well
Add your answer

You can get the information and answer in Google

Q1. Xg boost, naive Bayes algorithm, standard deviation formula and detailed information about that
Add your answer
Q2. What is xg boost All about naive Bayes algorithm Standard deviations and the formula
Add your answer
Q3. What is the Byes rules and there in deep
Ans. 
Bayes' rule is a fundamental concept in probability theory that allows us to update our beliefs based on new evidence.
• Bayes' rule is named after Thomas Bayes, an 18th-century mathematician.

• It is also known as Bayes' theorem or Bayes' law.

• Bayes' rule calculates the probability of an event based on prior knowledge and new evidence.

• It is commonly used in machine learning and statistical inference.

• The formula for Bayes' ru...read more
Answered by AI
Add your answer

Q1. How to calculate YTD attrition percentage
Ans. 
YTD attrition percentage is calculated by dividing the number of employees who have left during the year by the average number of employees during the year, multiplied by 100.
• Calculate the total number of employees who have left during the year

• Calculate the average number of employees during the year

• Divide the number of employees who have left by the average number of employees, then multiply by 100 to get the YTD attr
Answered by AI
View 1 more answer
Q2. How to analyze attrition trend and reduce it
Ans. 
To analyze attrition trend and reduce it, one can use data analysis, employee feedback, and implementing retention strategies.
• Collect and analyze data on employee turnover rates over time

• Conduct exit interviews to understand reasons for attrition

• Implement retention strategies such as career development opportunities, competitive compensation, and work-life balance initiatives

• Monitor employee engagement and satisfaction...read more
Answered by AI
Add your answer
Q3. KRA as a team lead in the current company
Add your answer
Q4. Difference between HMO and PPO plans
Add your answer

Q1. Previous project experience and tools utilized
Add your answer
Q2. How did you contribute to your teams progress
Add your answer

Pure coding on DS Algo in your preferred language

Coding round in your preferred language.

Q1. LLD HLD system Design
Add your answer

Q1. Design questions like you tube twitter etc
Add your answer

Q1. Give brief about your professional experience?
Add your answer
Q2. What data have you gathered for your interview role?
Add your answer
Q3. How could you add value to this role?
Add your answer