Synechron Interview Questions, Process, and Tips

I am currently working as a Database Tester in a project focusing on ensuring data accuracy and integrity.

• Responsible for designing and executing test cases to validate database functionality

• Identifying and reporting defects in the database system

• Collaborating with developers to troubleshoot and resolve issues

• Ensuring data security and compliance with regulations

• Using SQL queries to retrieve and manipulate data for tes

A test plan outlines the scope, approach, resources, and schedule for testing a software application.

• Identify objectives and scope of testing

• Define test strategies and methodologies

• List resources and tools required for testing

• Specify test environment setup

• Outline test schedule and milestones

• Detail test cases and scenarios

• Include risk assessment and mitigation plans

Joins in SQL are used to combine rows from two or more tables based on a related column between them.

• Joins are used to retrieve data from multiple tables based on a related column

• Common types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column

Test cases for uploading a file with different scenarios

• Verify that the file upload button is functional

• Test uploading a file of maximum allowed size

• Check for error messages when uploading an unsupported file format

• Ensure successful upload of different file types (e.g. .txt, .pdf, .docx)

• Test the behavior when trying to upload a file with the same name as an existing file

Regression testing is the process of retesting a software application to ensure that new code changes have not adversely affected existing functionality.

• Regression testing is done to ensure that new code changes do not introduce new bugs or break existing functionality.

• It is typically performed after code changes, bug fixes, or new feature additions.

• Regression testing should be automated whenever possible to save time ...read more

To create a bug in Jira, enter detailed information like summary, description, priority, assignee, and labels.

• Enter a clear and concise summary of the bug

• Provide a detailed description of the bug including steps to reproduce

• Set the priority level of the bug (e.g. High, Medium, Low)

• Assign the bug to the appropriate team member

• Add relevant labels/tags for easy categorization

Priority and severity of a defect in database testing, types, how to choose, with examples

• Priority is the importance of fixing a defect, while severity is the impact of the defect on the system

• Different types of severity include critical, major, minor, and trivial

• Different types of priority include high, medium, and low

• Choosing priority and severity involves considering the impact on users, functionality, and business ...read more

Defect management system tracks and manages defects found during testing, while test management system organizes and controls the testing process.

• Defect management system involves logging, tracking, prioritizing, and resolving defects identified during testing.

• Test management system includes test planning, execution, and reporting to ensure testing is carried out effectively.

• Examples of defect management tools: Jira, B...read more

Creating and executing test cases in qTest involves defining test steps, assigning them to testers, executing them, and generating test reports to track progress.

• Define test cases by specifying test steps, expected results, and assigning them to testers

• Execute test cases by running them and recording the actual results

• Track progress by monitoring the status of test cases and overall test execution

• Generate test reports ...read more

To check reports generated in SQL, run queries to validate data accuracy. Benefits of database testing include ensuring data integrity and identifying performance issues.

• Run SQL queries to validate data accuracy in reports

• Check for data integrity by comparing expected results with actual results

• Identify performance issues by analyzing query execution times

• Ensure data consistency across different reports and databases

We use SQL queries and automated testing tools to verify regulatory reports. We validate data accuracy, completeness, and compliance.

• We use SQL queries to extract data from the database for regulatory reports

• We use automated testing tools like Selenium or JUnit to validate the reports

• We verify data accuracy, ensuring that the numbers and information in the reports are correct

• We check for data completeness, making sure ...read more

Cluster load balancing in Node.js helps distribute incoming requests among multiple instances of the application to improve performance and reliability.

• Cluster load balancing allows Node.js applications to utilize multiple CPU cores efficiently by creating child processes to handle incoming requests.

• It helps prevent a single instance of the application from becoming overwhelmed with requests, leading to improved perfor...read more

CQRS is a design pattern that separates the read and write operations of a system, using different models for each.

• CQRS separates the responsibility of handling commands (write operations) from queries (read operations).

• It helps in achieving better scalability, performance, and maintainability by using different models for reads and writes.

• For example, in a banking application, the write model may handle transactions a...read more

Transactions in a database ensure that a group of operations are completed successfully or rolled back if any part fails.

• Transactions help maintain data integrity by ensuring all changes are either committed or rolled back as a single unit.

• ACID properties (Atomicity, Consistency, Isolation, Durability) are maintained in transactions.

• Examples of transactions include transferring money between bank accounts or booking a ...read more

Durability ensures that once a transaction is committed, it will persist even in the event of a system failure.

• Durability guarantees that once a transaction is committed, it will not be lost even in the event of a system crash.

• This is typically achieved through mechanisms like write-ahead logging and periodic checkpoints.

• Examples of ACID-compliant databases that ensure durability include PostgreSQL, Oracle, and SQL Ser

Advantages of using a microservice architecture include scalability, flexibility, fault isolation, and technology diversity.

• Scalability: Microservices allow for individual components to be scaled independently, leading to better resource utilization.

• Flexibility: Each microservice can be developed, deployed, and updated independently, allowing for faster innovation and reduced time to market.

• Fault Isolation: If one micr...read more

Replication in a database involves copying and distributing data across multiple servers to ensure redundancy and availability.

• Replication involves creating multiple copies of the database on different servers.

• Changes made to the primary database are then propagated to the replica databases.

• Replication can be synchronous or asynchronous, with synchronous replication ensuring data consistency but potentially impacting p...read more

CQRS works by separating read and write operations in a system, improving scalability and performance.

• CQRS allows for optimized read and write operations by using separate models for each

• It simplifies the design of the system by separating concerns

• Improves scalability as read and write operations can be scaled independently

• Enables better performance by allowing for optimized data storage and retrieval strategies

Singleton pattern ensures a class has only one instance and provides a global point of access to it.

• Singleton pattern can be implemented by making the constructor private and providing a static method to access the instance.

• The pattern can be broken by using reflection to access the private constructor and create multiple instances.

• Another way to break the Singleton pattern is by using multiple class loaders in Java.

• Th...read more

HashMap internally uses an array of linked lists to store key-value pairs. To store duplicate keys, we can use a custom implementation of HashMap.

• HashMap internally uses an array of linked lists to handle collisions.

• To store duplicate keys, we can create a custom HashMap implementation that allows multiple values for the same key.

• One approach is to use a HashMap with values as lists, where each key can have multiple va

Use compensating transactions and distributed tracing for managing transaction and logging in case of service B failure.

• Implement compensating transactions to rollback changes made by service B in case of failure.

• Use distributed tracing to track the flow of requests and identify where the failure occurred.

• Implement retry mechanisms to handle transient failures in service B.

• Use circuit breakers to prevent cascading fail...read more