ETL Developer
ETL Developer Interview Questions and Answers for Freshers
Q1. Are you ok if we give you testing project
Yes, I am open to taking on a testing project as part of my role as an ETL Developer.
I have experience with testing tools and methodologies in my previous roles.
I understand the importance of testing in ensuring data accuracy and quality.
Taking on a testing project will help me improve my skills and knowledge in ETL development.
Q2. Use error handling method with Stored Procedure
Use TRY...CATCH block in SQL to handle errors in Stored Procedures
Enclose the code inside a TRY block
Use a CATCH block to handle any errors that occur
Use RAISEERROR or THROW statement to raise custom error messages
Use @@ERROR or @@ROWCOUNT to check for errors or affected rows
Q3. Which version of talend you are using
I am using Talend version 7.3.1 for ETL development.
I am currently using Talend version 7.3.1 for ETL development.
The specific version of Talend being used is 7.3.1.
Talend 7.3.1 offers various features and improvements for ETL processes.
Q4. Stored Procedure to get user input
Use a stored procedure to prompt user for input in ETL process.
Create a stored procedure with parameters to accept user input.
Use the parameters in the stored procedure to filter or manipulate data.
Prompt the user for input values when calling the stored procedure.
Q5. Performance tuning of ssis packages
Performance tuning of SSIS packages involves optimizing data flow, memory usage, and parallelism.
Optimize data flow by using efficient data sources and destinations
Minimize memory usage by using appropriate buffer sizes and reducing unnecessary data transformations
Increase parallelism by using multiple threads and optimizing task execution order
Use performance monitoring tools like SSIS logging and performance counters to identify bottlenecks
Consider using advanced techniques...read more
Q6. Explain SSIS and ite use cases
SSIS is a Microsoft tool used for ETL processes in data integration and data warehousing.
SSIS stands for SQL Server Integration Services
It is used for extracting, transforming, and loading data from various sources to destinations
SSIS can be used for automating workflows, data cleansing, and data migration tasks
It provides a visual interface for designing data flow tasks and control flow tasks
Example: Using SSIS to extract data from a CRM system, transform it into a standardi...read more
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