HCLTech Junior Tester Interview Questions and Answers

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

Experienced Senior Test Engineer with a strong background in software testing and quality assurance.

• Over 8 years of experience in testing web and mobile applications

• Proficient in test planning, execution, and automation using tools like Selenium and JIRA

• Skilled in identifying and documenting defects, and working closely with development teams to resolve issues

• Strong analytical and problem-solving skills, with a keen at

Salesforce is a cloud-based customer relationship management (CRM) platform that helps businesses manage their sales, customer service, marketing, and more.

• Cloud-based CRM platform

• Helps businesses manage sales, customer service, marketing, etc.

• Provides tools for automation, analytics, and integration

• Offers a wide range of apps and services for various business needs

Workflow is a declarative automation tool for automating standard processes, while Process Builder is a visual tool for automating business processes.

• Workflow is based on criteria and actions, while Process Builder uses a visual interface with point-and-click functionality.

• Workflow can only perform actions on the same object, while Process Builder can work across multiple objects.

• Workflow can only update fields on the ...read more

Automation process in Salesforce involves using tools like Salesforce Automation, Process Builder, and Apex triggers to automate repetitive tasks and streamline workflows.

• Salesforce Automation allows users to create rules and triggers to automate tasks like sending emails, updating records, and creating tasks.

• Process Builder is a visual tool that allows users to automate business processes by creating workflows with po...read more

HashMap is non-synchronized and allows null values, while Hashtable is synchronized and does not allow null values.

• HashMap is non-synchronized and not thread-safe, while Hashtable is synchronized and thread-safe.

• HashMap allows null values for both key and value, while Hashtable does not allow null keys or values.

• HashMap is faster than Hashtable as it is non-synchronized.

• HashMap is part of the Java Collections Framework

Types of exceptions in Selenium include NoSuchElementException, ElementNotVisibleException, StaleElementReferenceException, TimeoutException, and WebDriverException.

• NoSuchElementException: Thrown when an element could not be found in the DOM.

• ElementNotVisibleException: Thrown when an element is present in the DOM but not visible.

• StaleElementReferenceException: Thrown when an element is no longer attached to the DOM.

• Tim...read more

Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.

• Abstract class can have constructors, fields, and non-abstract methods, while interface cannot.

• A class can implement multiple interfaces but can only inherit from one abstract class.

• Abstract classes are used to define a common behavior for subclasses, while interfaces are used to define a contract for classes ...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