Innovaccer Interview Questions and Answers

Detect duplicates in an array of strings using various methods.

• Use a HashSet to track seen strings. If a string is already in the set, it's a duplicate. Example: ['apple', 'banana', 'apple'] -> 'apple' is a duplicate.

• Sort the array and check adjacent elements for duplicates. Example: ['apple', 'banana', 'apple'] becomes ['apple', 'apple', 'banana'].

• Use a frequency map (dictionary) to count occurrences. Example: {'ap...read more

Use SQL query to find 5th max salary from employee_table.

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

• Use LIMIT 1 OFFSET 4 to get the 5th highest salary.

• Example: SELECT salary FROM employee_table ORDER BY salary DESC LIMIT 1 OFFSET 4;

Calculate average salary of employees for each department and order employees within a department by age.

• Group employees by department and calculate average salary for each group

• Sort employees within each department by age

• Display the results

SLA is an agreement between a service provider and a customer, while OLA is an agreement between different teams within the same organization.

• SLA (Service Level Agreement) is an agreement between a service provider and a customer, outlining the level of service that is expected.

• OLA (Operational Level Agreement) is an agreement between different teams within the same organization, defining the responsibilities and expec...read more

Views and triggers are SQL database objects used for data manipulation and automation.

• Views are virtual tables that display data from one or more tables based on a query.

• Triggers are special stored procedures that are automatically executed in response to certain events on a table.

• Views can simplify complex queries by predefining joins and filters.

• Triggers can enforce data integrity rules or automate tasks like auditin...read more

Use the DISTINCT keyword in a SELECT query to remove duplicates from a dataset.

• Use the SELECT DISTINCT statement to retrieve unique rows from a table

• Example: SELECT DISTINCT column1, column2 FROM table_name;

• Another way is to use the GROUP BY clause with aggregate functions like COUNT() or SUM() to remove duplicates

Use a subquery to find the third highest salary in a table using SQL.

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

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

• Use a subquery to select the third highest salary from the sorted list.

Different roles in Power BI include Power BI Developer, Power BI Analyst, Power BI Administrator, and Power BI User.

• Power BI Developer - responsible for creating and maintaining Power BI reports and dashboards

• Power BI Analyst - analyzes data using Power BI to provide insights and recommendations

• Power BI Administrator - manages security, access, and data sources in Power BI

• Power BI User - consumes reports and dashboards...read more

I am a Data Ops Engineer with a strong background in data management and automation.

• Experienced in setting up data pipelines and ETL processes

• Proficient in SQL, Python, and cloud platforms like AWS

• Skilled in troubleshooting and optimizing data workflows

I am a Data Ops Engineer with experience in managing data pipelines, ensuring data quality, and optimizing data processes.

• Experienced in building and maintaining data pipelines

• Skilled in data quality assurance and data governance

• Proficient in optimizing data processes for efficiency

• Familiar with tools like Apache Airflow, AWS Glue, and SQL databases

I am a Data Ops Engineer with a strong background in data management and automation.

• Experienced in setting up and maintaining data pipelines

• Proficient in scripting languages like Python and SQL

• Skilled in data quality monitoring and troubleshooting

• Familiar with cloud platforms like AWS and GCP

My current salary is split between base salary and bonuses.

• Base salary makes up 70% of my total salary

• Bonuses make up the remaining 30%

• For example, if my total salary is $100,000, my base salary would be $70,000 and bonuses would be $30,000

I am looking for a competitive salary based on my experience and skills in the industry.

• Research the average salary range for Data Ops Engineers in the specific location

• Consider your years of experience and relevant skills when determining your expected salary

• Be prepared to negotiate based on the company's budget and benefits package