Across
- 4. | A real-world object represented in a database
- 5. | Represents missing or unknown values
- 6. | SQL commands to define database structure
- 8. | Links rows between two different tables
- 9. | The structure or design of a database
Down
- 1. | A column or field in a table
- 2. | A table in a relational database
- 3. | A single row of data in a table
- 7. | Uniquely identifies each record in a table
- 9. | Language used to interact with databases