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Bajaj Finserv Health Interview Questions and Answers

Updated 26 Nov 2024

Q1. How to do parallel processing in Talend with examples?

Ans.

Parallel processing in Talend allows for executing multiple tasks simultaneously, improving performance.

  • Use tParallelize component to run subjobs in parallel

  • Enable parallel execution in job settings

  • Utilize tFlowToIterate to process data in parallel

  • Implement parallel processing for large data sets to optimize performance

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Q2. how your data migration experience will be helpful in bringing revenue for the company

Ans.

My data migration experience will help in bringing revenue by ensuring smooth transitions, minimizing downtime, and maximizing data accuracy.

  • Ensuring seamless transition of customer data to our platform, reducing customer churn and increasing retention rates

  • Minimizing downtime during data migration, leading to increased customer satisfaction and loyalty

  • Maximizing data accuracy during migration, improving overall customer experience and trust in our services

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Q3. On which Talend version u are working ?

Ans.

I am currently working on Talend version 7.3.1.

  • Working on Talend version 7.3.1

  • Familiar with the features and updates in this version

  • Experience in developing ETL processes using this version

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Q4. You have a hotel and how will you create a complete schema for hotel

Ans.

To create a complete schema for a hotel, you need to consider various entities like rooms, guests, reservations, staff, amenities, etc.

  • Entities to include: rooms, guests, reservations, staff, amenities, invoices, payments

  • Relationships between entities: guest stays in a room, staff manages reservations, amenities are available in rooms

  • Attributes for each entity: room number, guest name, reservation date, staff ID, amenity type, invoice number, payment method

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Q5. Python: Difference between Set and Dictionary. Can we update key in dictionary? Write solution for given python question (nums = [1,2,3,4,5,7,10] target = 9 output = [1,5])

Ans.

Set is a collection of unique elements, while dictionary is a collection of key-value pairs. Keys in dictionary can be updated.

  • Set does not allow duplicate elements, while dictionary allows duplicate values but not duplicate keys.

  • Dictionary uses key-value pairs for storing data, while set only stores individual elements.

  • Example: Set - {1, 2, 3}, Dictionary - {'a': 1, 'b': 2}

  • Yes, keys in dictionary can be updated by assigning a new value to the existing key.

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Q6. SQL: Explain difference between Delete, Truncate and Drop. Difference between Group by and Having. Asked to write a update query.

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Q7. Explain projects where you have implemented ETL. Difference between aws lambda and aws glue

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