Core Data Concepts

Question 1

Q: What are the main characteristics of structured data?

Answer 1

• Follows a fixed schema
• Organized in tables with rows and columns
• Examples include SQL databases, spreadsheets
• Easy to search and analyze
• Typically used in relational databases

Question 2

What distinguishes semi-structured data from structured data?

Answer 2

Semi-structured data:

• Has some organizational properties but no fixed schema
• Contains tags or markers to separate elements
• Examples include JSON, XML files
• More flexible than structured data
• Common in NoSQL databases

Question 3

What are the key characteristics of unstructured data?

Answer 3

• No predefined data model or organization
• Raw format with no structure
• Examples include text documents, images, videos
• More difficult to search and analyze
• Requires specialized tools for processing