i
HCLTech
Filter interviews by
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 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...
I appeared for an interview 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
I applied via Recruitment Consulltant and was interviewed before Feb 2023. There was 1 interview round.
Transformer stage is a Datastage stage used for data transformation and manipulation.
Transformer stage is used to perform complex data transformations and manipulations.
It allows users to define custom logic using graphical mapping.
It supports various functions and operators for data manipulation.
Transformer stage can be used to filter, aggregate, join, and sort data.
It can also be used to perform calculations, convers...
I applied via Naukri.com and was interviewed in Nov 2020. There were 3 interview rounds.
I applied via Referral and was interviewed before Apr 2020. There were 3 interview rounds.
I applied via Company Website and was interviewed before Feb 2020. There was 1 interview round.
based on 2 interviews
Interview experience
based on 2 reviews
Rating in categories
Software Engineer
23.4k
salaries
| ₹1.9 L/yr - ₹8 L/yr |
Technical Lead
21.5k
salaries
| ₹7 L/yr - ₹27.9 L/yr |
Senior Software Engineer
16k
salaries
| ₹4.5 L/yr - ₹17 L/yr |
Lead Engineer
15.8k
salaries
| ₹4.1 L/yr - ₹14 L/yr |
Analyst
14.7k
salaries
| ₹0.8 L/yr - ₹6.6 L/yr |
TCS
Wipro
Accenture
Cognizant