Accutest Research Laboratories Interview Questions and Answers

SQL is necessary for most projects involving databases to manage and query data efficiently.

• SQL is essential for creating, updating, and querying databases in most projects.

• Without SQL, it would be challenging to interact with databases and retrieve specific data.

• Examples of SQL commands include SELECT, INSERT, UPDATE, and DELETE.

• SQL can help optimize database performance and ensure data integrity.

HQL stands for Hibernate Query Language, a query language similar to SQL but used for Hibernate ORM framework.

• HQL is used to perform database operations in Hibernate ORM framework.

• It is similar to SQL but operates on Hibernate objects instead of database tables.

• HQL queries are written in Hibernate-specific syntax.

• Example: 'FROM Employee e WHERE e.department = :dept'

• HQL queries are translated into SQL queries by Hiberna

Views in Java are user interface components that display data from a model in a specific format.

• Views are used to represent the user interface in Java applications.

• They display data from a model in a visually appealing format.

• Examples include buttons, text fields, labels, and checkboxes.

Cross joins are a type of join operation in SQL that combines each row from one table with each row from another table.

• Cross joins do not have a join condition specified, resulting in a Cartesian product of the two tables.

• They can be used when you want to combine every row from one table with every row from another table.

• Cross joins can lead to a large result set if the tables being joined have many rows.

Delete removes rows one by one, while truncate removes all rows at once.

• Delete is a DML command, while truncate is a DDL command.

• Delete can be rolled back, while truncate cannot be rolled back.

• Delete fires triggers, while truncate does not fire triggers.

• Delete is slower as it logs individual row deletions, while truncate is faster as it logs the deallocation of the data pages.

Regulatory authorities are organizations responsible for overseeing and enforcing regulations in specific industries.

• Food and Drug Administration (FDA) - regulates food and drug products in the United States

• Securities and Exchange Commission (SEC) - oversees securities markets and enforces regulations

• Federal Communications Commission (FCC) - regulates communications by radio, television, wire, satellite, and cable

• Envir...read more

I prioritize backlog based on value, dependencies, deadlines, and customer feedback.

• Prioritize user stories with high business value

• Consider dependencies between user stories

• Meet deadlines by prioritizing critical tasks first

• Incorporate customer feedback to adjust priorities

I handle changing requirements by prioritizing them based on impact and feasibility.

• Regular communication with stakeholders to understand the changes

• Prioritizing changes based on impact and feasibility

• Adapting the project plan and timeline accordingly

• Implementing Agile methodologies to accommodate changes

• Ensuring clear documentation of changes for team members

User stories are short, simple descriptions of a feature told from the perspective of the person who desires the new capability.

• As a user, I want to be able to create a profile so I can personalize my experience

• As a user, I want to be able to search for products by category so I can easily find what I need

• As a user, I want to be able to add items to my shopping cart and checkout quickly