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I applied via Naukri.com and was interviewed in Nov 2020. There were 3 interview rounds.
Join is used to combine rows from two or more tables based on a related column, while lookup is used to retrieve data from a reference table based on a matching key.
Join combines rows from multiple tables based on a related column
Lookup retrieves data from a reference table based on a matching key
Join can result in duplicate rows if there are multiple matches, while lookup returns only the first matching row
Join is use...
Fact table contains quantitative data and measures, while dimension table contains descriptive attributes.
Fact table contains numerical data that can be aggregated (e.g. sales revenue, quantity sold)
Dimension table contains descriptive attributes for analysis (e.g. product name, customer details)
Fact table is typically normalized, while dimension table is denormalized for faster queries
Fact table is usually larger in s
Use sed command to display the line before a specific pattern
Use 'sed -n '/pattern/{g;1!p;};h' file.txt' to display the line before the pattern
Replace 'pattern' with the specific pattern you are looking for
This command will display the line before the pattern in the file
I applied via Naukri.com and was interviewed in Mar 2024. There was 1 interview round.
Data Stage is an ETL tool by IBM, while Informatica is a popular ETL tool by Informatica Corporation.
Data Stage is developed by IBM, while Informatica is developed by Informatica Corporation.
Data Stage is known for its parallel processing capabilities, while Informatica is known for its ease of use and flexibility.
Data Stage has a graphical interface for designing jobs, while Informatica uses a more traditional workflo...
I was interviewed before Aug 2022.
Use Datastage to remove duplicates from a dataset
Use a Remove Duplicates stage in Datastage to eliminate duplicate records
Configure the Remove Duplicates stage to identify and remove duplicates based on specific key columns
Ensure that the dataset is sorted properly before applying the Remove Duplicates stage
posted on 13 Nov 2021
I applied via Naukri.com and was interviewed in Oct 2021. There were 3 interview rounds.
My experience in SQL and SSIS has prepared me well for Datastage development. I am confident in my ability to quickly learn and excel in this role.
My experience in SQL and SSIS has given me a strong foundation in data integration and ETL processes.
I have already demonstrated my ability to learn quickly and adapt to new technologies, as evidenced by my success in my current role.
I am eager to expand my skillset and take...
SQL architecture refers to the structure and components of a SQL database system.
SQL architecture includes components like storage engine, query processor, and buffer manager.
The storage engine manages data storage and retrieval, while the query processor processes SQL queries.
The buffer manager handles caching and memory management to optimize performance.
Examples of SQL architectures include MySQL, Oracle, and SQL Se
Asked question from basic aptitude topics
posted on 14 Jun 2022
posted on 11 Sep 2021
I applied via Naukri.com and was interviewed in Aug 2021. There were 3 interview rounds.
I was interviewed in Mar 2021.
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