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15 uniquely designed questions just for you to evaluate your skills in Basics of Database quiz. Are you ready to challenge yourself and explore more? Let's get started and see how much you can score out of 15.

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Questions

1. What is a database?
Answer: A structured collection of data
Explanation: A database is a structured collection of data.Report for correction
2. What does DBMS stand for?
Answer: Database Management System
Explanation: DBMS stands for Database Management System.Report for correction
3. Which term refers to a row in a database table?
Answer: Record
Explanation: A record is a row in a database tableReport for correction
4. What is a primary key?
Answer: A unique identifier for a record in a table
Explanation: A primary key is a unique identifier for a record in a table.Report for correction
5. Which term refers to the structure that defines the data format and relationships in a database?
Answer: Schema
Explanation: A schema defines the structure and organization of data in a database.Report for correction
6. In a relational database, what is a table?
Answer: A collection of records
Explanation: In a relational database, a table is a collection of recordsReport for correction
7. What is a foreign key in a relational database?
Answer: A key used for joining tables
Explanation: A foreign key is used to establish a relationship between tables.Report for correction
8. What is normalization in database design?
Answer: Splitting data into smaller tables
Explanation: Normalization is the process of splitting data into smaller tables to reduce redundancy.Report for correction
9. What is a database index used for?
Answer: Improving data retrieval performance
Explanation: A database index improves data retrieval performance by enabling faster searching.Report for correction
10. Which SQL command is used to update existing data in a table?
Answer: UPDATE
Explanation: The UPDATE command is used to update existing data in a table.Report for correction
11. What is a SQL JOIN used for?
Answer: Combining data from multiple tables
Explanation: A SQL JOIN is used to combine data from multiple tables based on a related column.Report for correction
12. What is a database transaction?
Answer: A series of database operations treated as a single unit
Explanation: A database transaction is a series of database operations treated as a single unit for data consistency.Report for correction
13. What is an ERD in database design?
Answer: Entity-Relation Diagram
Explanation: ERD stands for Entity-Relation Diagram, used for visualizing database relationships.Report for correction
14. What is cardinality in a database relationship?
Answer: The number of related records between tables
Explanation: Cardinality refers to the number of related records between tables in a database relationship.Report for correction
15. What is a composite key in database design?
Answer: A key made up of multiple columns
Explanation: A composite key is made up of multiple columns and is used to uniquely identify records.Report for correction






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