o9 Solutions Interview Questions, Process, and Tips

Aptitude followed by sql based technical test

Q1. Machine learning algos used in sales prediction
Ans. 
Machine learning algorithms commonly used in sales prediction include linear regression, decision trees, random forests, and neural networks.
• Linear regression: used to establish a relationship between independent and dependent variables

• Decision trees: used to make decisions based on a series of questions and answers

• Random forests: ensemble method combining multiple decision trees for improved accuracy

• Neural networks: d...read more
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Q2. Supply chain and use of deep learning instead of ml in it
Ans. 
Deep learning in supply chain can optimize operations, improve forecasting accuracy, and enhance decision-making.
• Deep learning can be used in supply chain for demand forecasting, inventory optimization, and route optimization.

• It can help in identifying patterns and trends in data to make more accurate predictions.

• Deep learning models can analyze large volumes of data quickly and efficiently, leading to better decision-...read more
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Q1. Resume projects
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Q2. Basic hr questions
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Q1. What is normalisation
Ans. 
Normalization is the process of organizing data in a database to reduce redundancy and improve data integrity.
• Normalization involves breaking down data into smaller, more manageable tables.

• It helps in reducing data redundancy by storing data in a structured manner.

• Normalization ensures data integrity by avoiding update anomalies.

• There are different normal forms such as 1NF, 2NF, 3NF, and BCNF.

• Example: In a database, in...read more
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Q2. About the project done in final year
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Q3. Demand planning process
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Q4. Supply planning process
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Simple Python and SQL questions coding questions. 50 MCQs

Q1. Spark Architecture and all basics of Spark
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Q2. Find the the values in a list that have duplicates
Ans. 
Use a hashmap to track duplicates in a list of values
• Iterate through the list and store each value in a hashmap with its count

• Identify values with count greater than 1 as duplicates

• Return the list of values that have duplicates
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Q3. PySpark Questions on Aggregations
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40 apptitide and 10 Sql questions to be solved in 55 min

Q1. About the projects
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Q2. Behavioral questions
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Q1. Why o9 solutions ?
Ans. 
o9 solutions offers cutting-edge technology and expertise in supply chain planning and digital transformation.
• o9 solutions provides advanced AI and machine learning capabilities for optimized decision-making.

• Their platform enables real-time visibility and collaboration across the supply chain.

• o9 solutions has a proven track record of successful implementations with global companies like Walmart and Nestle.
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Q1. Monolith architecture vs microservices?
Ans. 
Monolith architecture is a single, unified system, while microservices architecture breaks down the system into smaller, independent services.
• Monolith architecture is a single, unified system where all components are interconnected and interdependent.

• Microservices architecture breaks down the system into smaller, independent services that communicate through APIs.

• Monoliths are easier to develop and deploy initially, bu...read more
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Based on sql and general aptitude for campus recruitment

It was based on mostly SQL and database