Technumen Data Analyst Interview Questions and Answers

I have 5 years of experience as a Data Analyst.

• 5 years of experience as a Data Analyst

• Proficient in data analysis tools such as SQL, Excel, and Python

• Experience in data visualization and reporting using Tableau

• Strong analytical and problem-solving skills

• Ability to interpret and communicate complex data findings

• Experience in working with large datasets and performing data cleaning and manipulation

• Collaborated with cross...read more

A composite key is a combination of two or more columns that uniquely identifies a record in a database table.

• A composite key is used when a single column cannot uniquely identify a record.

• It is created by combining two or more columns that have unique values.

• It is commonly used in many-to-many relationships.

• Example: A table that stores orders may use a composite key of order number and customer ID.

• Example: A table tha...read more