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I applied via Company Website and was interviewed before Nov 2023. There were 2 interview rounds.
ETL process stands for Extract, Transform, Load. It is a data integration process used to collect data from various sources, transform it into a consistent format, and load it into a target database or data warehouse.
Extract: Data is extracted from multiple sources such as databases, files, APIs, etc.
Transform: Data is cleaned, formatted, and transformed into a consistent structure.
Load: Transformed data is loaded into...
To merge two data sets, use a common key to combine the rows from each set into a single data set.
Identify a common key in both data sets to merge on
Use a join operation (e.g. inner join, outer join) to combine the data sets based on the common key
Choose the appropriate join type based on the desired outcome (e.g. keep all rows from both sets, only matching rows, etc.)
Data mining is the process of discovering patterns and relationships in large datasets.
Data mining involves extracting useful information from large datasets
It uses various techniques such as machine learning, statistics, and database systems
Examples include market basket analysis, clustering, and classification
Data cleaning is the process of identifying and correcting errors or inconsistencies in data to improve its quality and accuracy.
Removing duplicate entries
Correcting spelling errors
Handling missing values
Standardizing data formats
Identifying and removing outliers
Top trending discussions
I appeared for an interview before Jan 2024.
Python sql coading questions with mcqa
ACID properties are a set of properties that guarantee database transactions are processed reliably.
ACID stands for Atomicity, Consistency, Isolation, Durability
Atomicity ensures that either all operations in a transaction are completed or none are
Consistency ensures that the database remains in a consistent state before and after the transaction
Isolation ensures that multiple transactions can occur concurrently withou...
I applied via Instahyre and was interviewed before Nov 2022. There were 5 interview rounds.
Sql Coding round questions were asked
posted on 29 Jul 2022
I applied via Recruitment Consulltant
posted on 13 Aug 2024
I applied via LinkedIn and was interviewed before Aug 2023. There were 2 interview rounds.
Handling difficult stakeholders requires effective communication, active listening, building trust, and managing expectations.
Establish clear communication channels and set expectations early on
Actively listen to their concerns and address them in a timely manner
Build trust through transparency and honesty
Involve them in decision-making processes to make them feel valued
Seek common ground and find win-win solutions
Mana...
I have 5 years of experience as a Business Analyst in the finance industry.
Led cross-functional teams to analyze market trends and develop strategic plans
Performed data analysis to identify opportunities for cost reduction and revenue growth
Collaborated with stakeholders to gather requirements and create detailed business requirements documents
Business Analysts use various types of documentation to analyze and communicate business requirements.
Business requirements documents (BRD)
Functional requirements documents (FRD)
Use cases
User stories
Process flow diagrams
Data flow diagrams
Entity relationship diagrams
Mockups and wireframes
I applied via LinkedIn and was interviewed in Sep 2023. There were 2 interview rounds.
Bias-variance tradeoff is the balance between underfitting and overfitting in machine learning models.
Bias refers to error from erroneous assumptions in the learning algorithm, leading to underfitting.
Variance refers to error from sensitivity to small fluctuations in the training set, leading to overfitting.
The tradeoff involves finding the right level of model complexity to minimize both bias and variance.
Regularizati...
SQL code to find 2nd highest salary
Use the MAX() function to find the highest salary
Use the WHERE clause to exclude the highest salary
Order the salaries in descending order and limit the result to 1
I applied via JobTeaser and was interviewed in Dec 2023. There was 1 interview round.
General aptitude test
based on 1 interview
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