British Car Auctions IT Analyst Interview Questions and Answers for Experienced

Sql query error validation and analytics querying for test case

Q1. Ab testing experiment based aptitude
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Q2. Sql query to find longest streak of orders by customer
Ans. 
Use SQL query to find longest streak of orders by customer
• Use window functions like ROW_NUMBER() to assign a sequential number to each order for each customer

• Partition the data by customer and order the rows by order date

• Calculate the difference between the sequential numbers to identify streaks of consecutive orders

• Select the maximum streak length for each customer
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Q1. Explain OOPs in Java.
Ans. 
OOPs in Java refers to Object-Oriented Programming concepts like classes, objects, inheritance, encapsulation, and polymorphism.
• OOPs in Java is based on the concept of classes and objects.

• It involves features like inheritance, encapsulation, and polymorphism.

• Classes are blueprints for objects, defining their properties and behaviors.

• Inheritance allows a class to inherit properties and methods from another class.

• Encapsu...read more
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Q2. What is Exception Handling and where it is used.
Ans. 
Exception handling is a mechanism to handle runtime errors in a program to prevent it from crashing.
• Exception handling is used to handle unexpected errors or exceptional conditions that may occur during program execution.

• It allows the program to gracefully recover from errors and continue executing.

• Common exception handling techniques include try-catch blocks, throw statements, and finally blocks.

• Examples of exceptions...read more
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Q1. 1) Difference between Inner join and outer join. Explain it to a non technical person
Ans. 
Inner join combines only matching rows from two tables, while outer join includes all rows from one table and only matching rows from the other.
• Inner join only includes rows that have matching values in both tables

• Outer join includes all rows from one table and only matching rows from the other

• Example: Inner join would return only customers who have made a purchase, while outer join would return all customers with thei
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Q1. Tell me about yourself, explain your project journey, how many projects you have led what was your previous experience what is scrum how do you identify requirements gathering what is sprint
Ans. 
I am an experienced business analyst with a track record of leading successful projects using Scrum methodology.
• I have led 10+ projects in my career, ranging from small-scale to enterprise-level

• My previous experience includes working as a business analyst for a Fortune 500 company

• Scrum is an agile framework used for project management and product development

• I identify requirements gathering by conducting stakeholder in...read more
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Q2. All scrum question
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Q3. Client profile awareness
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Q1. Are you ready to upgrade your technical skills.
Ans. 
Yes, I am always eager to learn and improve my technical skills to stay current in the field.
• I am constantly seeking out new training opportunities to enhance my technical knowledge.

• I have a track record of successfully learning new technologies and tools in previous roles.

• I understand the importance of staying up-to-date with the latest industry trends and advancements.
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Q2. Tell me end to end flow of any of your project.
Ans. 
The end to end flow of my project involved gathering requirements, analyzing data, designing solutions, implementing changes, and testing for quality assurance.
• Gathered requirements from stakeholders

• Analyzed data to identify trends and patterns

• Designed solutions based on analysis

• Implemented changes in the system

• Tested the changes for quality assurance
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Q1. SQL, JAVA OR Coding questions basics
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Q1. Background check and expectations
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