Osource Global Senior Accountant Interview Questions and Answers

I am a passionate software developer with experience in Java, Python, and web development.

• Experienced in Java, Python, and web development technologies

• Strong problem-solving skills

• Team player with excellent communication skills

MySQL database query

• Use SELECT statement to retrieve data from tables

• Use WHERE clause to filter data based on conditions

• Use JOIN to combine data from multiple tables

• Use ORDER BY to sort data in ascending or descending order

• Use LIMIT to limit the number of rows returned

UNION combines the results of two or more SELECT statements, while UNION ALL includes duplicates.

• UNION removes duplicate rows, while UNION ALL retains all rows including duplicates

• UNION is slower than UNION ALL as it performs a distinct operation

• UNION requires the same number of columns in the SELECT statements, while UNION ALL does not have this restriction

Generic collections allow storing any type of data, while non-generic collections are type-specific.

• Generic collections can store any type of data, such as List or Dictionary.

• Non-generic collections are type-specific, like ArrayList or HashTable.

• Generic collections provide type safety and better performance compared to non-generic collections.