TCS Senior Software Tester Interview Questions, Process, and Tips

Agile methodology allows for flexibility, collaboration, and faster delivery of high-quality software.

• Encourages customer involvement and feedback throughout the development process

• Allows for changes and adjustments to be made quickly and efficiently

• Promotes teamwork and communication among team members

• Delivers working software in shorter timeframes

• Reduces the risk of project failure

• Increases customer satisfaction

• Examp

TCD is based on the criteria of time, cost, and deliverables.

• TCD stands for Time, Cost, and Deliverables.

• It is a project management approach that focuses on these three criteria.

• The goal is to complete the project within the given time and budget while delivering the desired results.

• For example, if a software development project is using TCD, the team will prioritize tasks based on their impact on time, cost, and deliv...read more

Backlog is a list of tasks or requirements that need to be completed in a project.

• Backlog is a prioritized list of work items

• It includes user stories, bugs, and technical tasks

• It is constantly updated throughout the project

• It helps the team to plan and track progress

• Examples: JIRA, Trello, Asana

Scrum Master in Agile is equivalent to Project Manager in Waterfall.

• Scrum Master is responsible for facilitating the Agile process and ensuring the team follows it.

• Project Manager is responsible for managing the project from start to finish in Waterfall.

• Both roles involve managing the team and ensuring the project is completed on time and within budget.

• However, the approach and methodology used are different in Agile a

Drop command deletes the table structure along with data, while truncate command deletes only the data.

• Drop command removes the table structure and all its data, while truncate command only removes the data but keeps the table structure intact.

• Drop command is a DDL (Data Definition Language) command, while truncate command is a DML (Data Manipulation Language) command.

• Drop command is slower than truncate command as it ...read more

In my project, I perform validations such as data completeness, data accuracy, data transformation, and data integrity checks.

• Data completeness checks to ensure all required fields are populated

• Data accuracy checks to verify the correctness of data

• Data transformation checks to validate the transformation rules are applied correctly

• Data integrity checks to maintain data consistency and reliability

Star Schema is a type of database schema where a central fact table is connected to multiple dimension tables. Snowflake Schema is a normalized form of Star Schema where dimension tables are further normalized into sub-dimension tables.

• Star Schema has a central fact table connected to multiple dimension tables

• Snowflake Schema is a normalized form of Star Schema with sub-dimension tables

• Star Schema is denormalized for b...read more

Fact tables contain quantitative data while dimension tables contain descriptive attributes.

• Fact tables store measurable, quantitative data such as sales revenue or quantity sold

• Dimension tables store descriptive attributes related to the data in the fact table, such as product name or customer details

• Fact tables are typically normalized while dimension tables are denormalized for easier querying

• Example: In a sales dat...read more

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

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

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

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

A deferred bug is a bug that is not fixed immediately but is scheduled to be fixed in a future release.

• Deferred bugs are usually lower priority bugs that do not impact the core functionality of the system.

• These bugs are documented and tracked for resolution in a later release.

• Examples of deferred bugs include cosmetic issues, minor usability problems, or non-critical functionality issues.

Use SQL query with ORDER BY and LIMIT to get 4th highest row based on a column

• Use ORDER BY clause to sort the column in descending order

• Use LIMIT 1 OFFSET 3 to get the 4th highest row

• Example: SELECT * FROM table_name ORDER BY column_name DESC LIMIT 1 OFFSET 3