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Bajaj Finserv Health Interview Questions and Answers
Q1. How to do parallel processing in Talend with examples?
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
Q2. how your data migration experience will be helpful in bringing revenue for the company
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
Q3. On which Talend version u are working ?
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
Q4. You have a hotel and how will you create a complete schema for hotel
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
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])
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.
Q6. SQL: Explain difference between Delete, Truncate and Drop. Difference between Group by and Having. Asked to write a update query.
Q7. Explain projects where you have implemented ETL. Difference between aws lambda and aws glue
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