OMSGURU Solutions Product Development Executive Interview Questions and Answers

Q1. Difference between Inner, outer joins
Ans. 
Inner join returns only the matching rows between two tables, while outer join returns all rows from one table and matching rows from the other.
• Inner join: returns rows that have matching values in both tables

• Outer join: returns all rows from one table and matching rows from the other

• Example: Inner join - SELECT * FROM table1 INNER JOIN table2 ON table1.id = table2.id

• Example: Outer join - SELECT * FROM table1 LEFT OUTE
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Q2. Difference between full join and union
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Full join combines rows from both tables, including unmatched rows. Union combines rows from both tables, excluding duplicates.
• Full join includes all rows from both tables, filling in NULL values for unmatched rows.

• Union combines rows from both tables, excluding duplicates.

• Example: SELECT * FROM table1 FULL JOIN table2 ON table1.id = table2.id;

• Example: SELECT * FROM table1 UNION SELECT * FROM table2;
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Q3. About Copy activity
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Q4. About select transformation
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Q5. About join transformation and scd type 1
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Q1. What is cloud,DB
Ans. 
Cloud DB refers to a database that is hosted on a cloud computing platform, allowing for remote access and scalability.
• Cloud DB stores data on remote servers accessed over the internet

• It offers scalability, flexibility, and cost-effectiveness

• Examples include Amazon RDS, Google Cloud SQL, and Microsoft Azure SQL Database
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Q2. What is cyber security
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Cyber security refers to the practice of protecting systems, networks, and data from digital attacks.
• Involves protecting computers, servers, mobile devices, electronic systems, networks, and data from malicious attacks

• Includes measures such as firewalls, encryption, antivirus software, and user authentication

• Cyber security professionals work to prevent, detect, and respond to cyber threats

• Examples of cyber attacks incl...read more
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Q1. Database based questions
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Q2. Dashboard creative
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Q3. Power BI module
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Q1. Project discussion
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Q2. Self introduction
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Q1. Mostly asked java 8 update and distinct number in given array and Multithreading
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Q2. 2 program based on java 8, array reverse
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1 hour discussion on various topics

Q1. Tell me about yourself
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Q2. About company, why this role
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Q1. Same as 1st round
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Q1. To describe the project title
Ans. 
Designing a portable solar-powered water purification system
• Utilizing solar panels to power the system

• Incorporating filtration technology to purify water

• Ensuring portability for easy transportation
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Q2. Provided the project component
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Q3. Provided the components in your project
Ans. 
I would analyze the components to determine their compatibility, functionality, and potential improvements for the project.
• Analyze each component's specifications and requirements

• Identify any potential compatibility issues

• Evaluate the functionality of each component

• Brainstorm potential improvements or optimizations

• Consider cost and time constraints for implementing changes
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Q1. What is the Java code for comparing two strings for equality?
Ans. 
Use the equals() method in Java to compare two strings for equality.
• Use the equals() method to compare two strings for equality.

• Example: String str1 = "hello"; String str2 = "hello"; if(str1.equals(str2)) { // strings are equal }
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