LTIMindtree Senior Test Engineer Interview Questions, Process, and Tips

Incremental and full load are two methods of data extraction and loading.

• Incremental load only extracts and loads new or updated data since the last load.

• Full load extracts and loads all data every time.

• Incremental load is faster and more efficient than full load.

• Full load is useful when there are major changes in the data source.

• Example: Incremental load extracts and loads only new customer data since the last load.

• Ex...read more

Fact table contains quantitative data while dimension table contains descriptive data.

• Fact table stores data related to business processes and events

• Dimension table stores descriptive information about the data in the fact table

• Fact table is usually larger than dimension table

• Fact table is connected to dimension table through foreign keys

• Example: Sales fact table and product dimension table

Integration testing is the process of testing the interaction between different components or modules of a software system.

• It involves testing the interfaces between modules

• It ensures that the modules work together as expected

• It can be done manually or with automated tools

• Examples include testing the integration between a database and a web application, or between different microservices in a distributed system

Regression is testing to ensure changes do not affect existing functionality. Retesting is testing to ensure defects have been fixed.

• Regression testing is done to ensure that changes made to the software do not affect the existing functionality.

• Retesting is done to ensure that defects found during testing have been fixed.

• Regression testing is done after every change to the software.

• Retesting is done after a defect has ...read more

SQL query to find the 3rd highest salary.

• Use the ORDER BY clause to sort the salaries in descending order.

• Use the LIMIT clause to limit the result to the third row.

• Use a subquery to exclude the top two salaries.

• Example: SELECT salary FROM employees ORDER BY salary DESC LIMIT 2,1;

Constraints are limitations or restrictions that are put on a system or process.

• Constraints can be physical, such as the size or weight of a product

• Constraints can also be related to time, budget, or resources

• Constraints can impact the design, development, and testing of a system

• Examples of constraints include regulatory requirements, customer specifications, and technical limitations

A join is a SQL operation that combines rows from two or more tables based on a related column between them.

• Types of joins include inner join, left join, right join, and full outer join.

• Inner join returns only the matching rows from both tables.

• Left join returns all rows from the left table and matching rows from the right table.

• Right join returns all rows from the right table and matching rows from the left table.

• Full...read more

Drop, truncate and delete are SQL commands used to remove data from a table.

• DROP command removes the entire table and its data

• TRUNCATE command removes all data from the table but keeps the table structure

• DELETE command removes specific rows from the table based on a condition

• DROP and TRUNCATE cannot be rolled back, while DELETE can be

• DROP and TRUNCATE are faster than DELETE

A surrogate key is a unique identifier assigned to a record in a database when a natural primary key is not available or practical to use.

• Surrogate keys are often used in data warehousing and ETL processes.

• They can be generated using a variety of methods, such as auto-incrementing integers or UUIDs.

• Surrogate keys can improve performance and simplify database design.

• Example: Using a surrogate key instead of a customer's...read more

Normalization is the process of organizing data in a database to reduce redundancy and improve data integrity. Denormalization is the opposite process.

• Normalization involves breaking down a table into smaller tables and establishing relationships between them.

• Denormalization involves combining tables to improve performance by reducing the number of joins required.

• Normalization helps to prevent data inconsistencies and ...read more

A pattern SQL query is a query that follows a specific structure or format.

• Identify the pattern or structure required for the query

• Use appropriate SQL syntax to construct the query

• Test the query to ensure it returns the desired results

Validations are checks performed on data to ensure it meets certain criteria or requirements.

• Validations are done to ensure data accuracy, completeness, and consistency.

• They can be performed on user input, system output, or data stored in a database.

• Examples include checking for required fields, data type, length, format, and range.

• Validations can also be used to prevent security vulnerabilities such as SQL injection o...read more

Transformation refers to the process of changing or converting something from one form to another.

• Transformation can occur in various fields such as technology, business, and personal development.

• Examples of transformation include digital transformation, organizational transformation, and personal transformation.

• Transformation often involves a significant change in mindset, processes, and systems.

• Successful transformat...read more

Incremental load is performed by identifying new data and adding it to the existing data set.

• Identify new data based on a timestamp or unique identifier

• Extract new data from source system

• Transform and map new data to match existing data set

• Load new data into target system

• Verify data integrity and consistency

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

Static keyword in Java is used for memory allocation at class level rather than object level.

• Static variables are shared among all instances of a class.

• Static methods can be called without creating an instance of the class.

• Static blocks are used to initialize static variables.

• Example: public static int count = 0;

Constructor in Java is a special type of method used to initialize objects.

• Constructors have the same name as the class they are in.

• They do not have a return type, not even void.

• They are called when an object of a class is created.

• Constructors can be overloaded, meaning a class can have multiple constructors with different parameters.

In Selenium, clicking on elements can be done using the click() method.

• Locate the element using appropriate locator strategies

• Use the click() method to perform the click action

• Handle any exceptions that may occur during the click operation

Mouse over point in Selenium is used to simulate hovering over an element on a web page.

• Mouse over point is used to trigger dropdown menus or tooltips that appear when hovering over an element.

• It can be achieved using Actions class in Selenium.

• Example: actions.moveToElement(element).perform();

Movement types of different scenarios refer to the various ways in which objects or individuals can move in a given situation.

• Walking - moving on foot

• Running - moving quickly on foot

• Crawling - moving on hands and knees

• Swimming - moving through water

• Flying - moving through the air