Accenture Senior ETL Tester Interview Questions and Answers

Q1. Explain project architecture?
Ans. 
Project architecture refers to the overall structure of a software project, including components, modules, and their interactions.
• Project architecture defines how different components of a software project are organized and interact with each other.

• It includes the high-level design of the system, such as the database structure, data flow, and integration points.

• Project architecture also involves decisions on technologi...read more
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Q2. Explain challenges you faced in etl testing?
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Challenges in ETL testing include data quality issues, complex transformations, and handling large volumes of data.
• Data quality issues such as missing or incorrect data can impact testing results

• Complex transformations can be difficult to validate and may lead to errors in the ETL process

• Handling large volumes of data can slow down testing processes and require efficient testing strategies
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Q3. What are roles and responsibilities?
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Roles and responsibilities refer to the tasks and duties assigned to an individual within a specific job or position.
• Roles define the position or job title of an individual within an organization.

• Responsibilities outline the specific tasks, duties, and expectations associated with that role.

• Roles and responsibilities help clarify expectations, define boundaries, and ensure accountability.

• Examples include testing data e...read more
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Q4. How to find duplicate values in python?
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Use a dictionary to find duplicate values in an array of strings in Python.
• Create an empty dictionary to store the count of each string in the array.

• Iterate through the array and for each string, check if it exists in the dictionary. If it does, increment the count. If not, add it to the dictionary with a count of 1.

• After iterating through the array, check the dictionary for any strings with a count greater than 1. The
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Q1. Sql Quires related question.
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Q2. Data ware house related question
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Q3. What is entry criteria & exit criteria
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Entry criteria and exit criteria are conditions that must be met before and after testing, respectively.
• Entry criteria are the conditions that must be fulfilled before testing can begin

• Exit criteria are the conditions that must be fulfilled before testing can be considered complete

• Entry criteria can include having test data ready, test environment set up, and test cases prepared

• Exit criteria can include all test cases ...read more
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Q1. Explain inner join with an example
Ans. 
Inner join combines rows from two tables based on a related column between them.
• Inner join returns only the rows that have matching values in both tables

• It is used to retrieve data that exists in both tables

• Example: SELECT Orders.OrderID, Customers.CustomerName FROM Orders INNER JOIN Customers ON Orders.CustomerID = Customers.CustomerID;
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Q2. Explain cross join with an example
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Cross join combines each row from one table with each row from another table.
• Cross join produces a Cartesian product of the two tables involved.

• It does not require any common columns between the two tables.

• It can result in a large number of rows if the tables are big.

• Example: SELECT * FROM table1 CROSS JOIN table2;
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Q3. Provided Employee Table and asked to do a self join
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Q4. Explain different types of data validation and checks performed in ETL testing
Ans. 
Different types of data validation and checks in ETL testing include schema validation, data completeness checks, data transformation checks, and data quality checks.
• Schema validation ensures that the data conforms to the expected structure and format.

• Data completeness checks verify that all expected data is present and accounted for.

• Data transformation checks ensure that data is accurately transformed according to bus...read more
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Q1. Difference between Truncate , delete and drop
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Truncate, delete, and drop are SQL commands used to remove data from a database, but they differ in their functionality.
• Truncate is a DDL command that removes all rows from a table, but keeps the structure intact.

• Delete is a DML command that removes specific rows from a table based on a condition.

• Drop is a DDL command that removes an entire table from the database, including its structure and data.

• Truncate is faster th...read more
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Q1. Introduction current project framework java core selenium etc
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Q1. Introduction current project framework core java version control CI/CD selenium etc
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Q1. Introduction salary discussion joining location LWD etc
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Simple problems from Agarwal book.And basic coding

Q1. Normal HR questions about work experience and project
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Q2. Let me about your project
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Q3. Work experience of previous company
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Test MCQ's 30 Mins Mostly MCQ's

Basic Topic on AI/ML or Chat GPT

Q1. Basic technical questions about the domain
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Q2. One on AI One on ML
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Very tough....And critical thinking

Q1. What is your Strength?
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Q2. Tell me about your Project
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