10+ Senior Associate Engineer Interview Questions and Answers

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

• Joins are used to retrieve data from multiple tables in a single query

• There are different types of joins such as INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL OUTER JOIN

• Joins are based on a related column between the tables

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

Static functions are functions that belong to a class rather than an instance of the class. OOPs concepts include inheritance, encapsulation, and polymorphism.

• Static functions are called using the class name rather than an instance of the class

• They cannot access non-static members of the class

• OOPs concepts include inheritance, encapsulation, and polymorphism

• Inheritance allows a class to inherit properties and methods from a parent class

• Encapsulation is the practice of hiding ...read more

I have experience working on projects involving Spark architecture, PySpark architecture, and partitioning bucketing.

• Worked on a project where I implemented Spark architecture to process large datasets efficiently

• Utilized PySpark architecture to perform data transformations and analysis

• Implemented partitioning and bucketing techniques to optimize data storage and retrieval

Special process documentation is validated through review, testing, and verification.

• Review the documentation for accuracy and completeness

• Conduct testing to ensure the process meets requirements

• Verify that the documentation aligns with industry standards and regulations

Purchase is the act of buying goods or services in exchange for money or other forms of payment.

• Purchase involves exchanging money or other forms of payment for goods or services.

• It is a transaction where a buyer acquires ownership of a product or service from a seller.

• Examples include buying groceries at a supermarket, purchasing a new phone online, or paying for a subscription service.

Grade bar price refers to the cost of purchasing steel bars of a specific grade for construction purposes.

• Grade bar price is determined by the quality and grade of the steel used.

• Higher grade steel bars will typically have a higher price due to their superior strength and durability.

• Factors such as market demand, availability, and location can also impact the price of grade bars.

• For example, Grade 60 steel bars may cost more than Grade 40 steel bars due to their higher tensil...read more

ConcurrentHashMap allows multiple threads to read and write concurrently, while HashMap is not thread-safe.

• ConcurrentHashMap allows multiple threads to read and write concurrently without the need for external synchronization, making it suitable for high-concurrency applications.

• HashMap is not thread-safe and can lead to data corruption if accessed by multiple threads simultaneously without proper synchronization.

• ConcurrentHashMap achieves thread-safety by dividing the map in...read more

Query for duplicate data in SQL

• Use GROUP BY clause to group the data by the columns that may have duplicates

• Use HAVING clause to filter out the groups that have more than one row

• Use COUNT() function to count the number of rows in each group

Machine process refers to the sequence of steps or actions performed by a machine to achieve a specific task or goal.

• Machine process involves input, processing, and output stages

• It can include tasks such as data collection, analysis, decision-making, and automation

• Examples include manufacturing processes, data processing algorithms, and robotic operations

Our plant is responsible for manufacturing and distributing products to meet customer demand.

• Manufacturing products according to customer demand

• Distributing products to various locations

• Ensuring quality control measures are in place

• Maintaining equipment and facilities

• Managing inventory levels

• Implementing safety protocols

• Collaborating with other departments to optimize production processes

Hive metastore is a central repository that stores metadata for Hive tables and partitions.

• Hive metastore stores metadata such as table schema, location, and partition information.

• It allows multiple Hive sessions to access and share metadata.

• Metastore can be implemented using different databases like MySQL, PostgreSQL, or Derby.

• It is crucial for query optimization and data retrieval in Hive.