Podcast
Questions and Answers
What is the main purpose of Normalization?
What is the main purpose of Normalization?
- To minimize relationships
- To organize data in the database (correct)
- To increase data redundancy
- To create anomalies
Which type of anomaly does Insertion Anomaly refer to?
Which type of anomaly does Insertion Anomaly refer to?
- Update Anomaly
- Inability to Insert Data Anomaly (correct)
- Data Integrity Anomaly
- Insertion of Redundant Data Anomaly
What does Normalization aim to eliminate?
What does Normalization aim to eliminate?
- Insertion Anomalies (correct)
- Data Integrity
- Relationships
- Data Security
Why is it important to remove anomalies through Normalization?
Why is it important to remove anomalies through Normalization?
Which of the following does Normalization NOT help with?
Which of the following does Normalization NOT help with?
What happens when there is a Deletion Anomaly in a database?
What happens when there is a Deletion Anomaly in a database?
What is the main characteristic of a relation in 1NF?
What is the main characteristic of a relation in 1NF?
Which normal form requires that all non-key attributes be fully functional dependent on the primary key?
Which normal form requires that all non-key attributes be fully functional dependent on the primary key?
What does BCNF stand for in database normalization?
What does BCNF stand for in database normalization?
Which normal form focuses on the absence of multi-valued dependencies?
Which normal form focuses on the absence of multi-valued dependencies?
What is one of the disadvantages of normalization mentioned in the text?
What is one of the disadvantages of normalization mentioned in the text?
What does First Normal Form (1NF) disallow?
What does First Normal Form (1NF) disallow?
In the given context, if there is a transitive dependency for non-prime attributes, what form must the relation be in?
In the given context, if there is a transitive dependency for non-prime attributes, what form must the relation be in?
What are the conditions that need to be satisfied for a relation to be in third normal form?
What are the conditions that need to be satisfied for a relation to be in third normal form?
In the EMPLOYEE_DETAIL table, which set of attributes forms a candidate key?
In the EMPLOYEE_DETAIL table, which set of attributes forms a candidate key?
Why were EMP_CITY and EMP_STATE moved to the EMPLOYEE_ZIP table in the given scenario?
Why were EMP_CITY and EMP_STATE moved to the EMPLOYEE_ZIP table in the given scenario?
Which normal form does Boyce Codd normal form (BCNF) relate to in terms of relational database normalization?
Which normal form does Boyce Codd normal form (BCNF) relate to in terms of relational database normalization?
What makes Boyce Codd normal form (BCNF) stricter than 3NF?
What makes Boyce Codd normal form (BCNF) stricter than 3NF?
What is a lossless join decomposition in a database?
What is a lossless join decomposition in a database?
What does dependency preservation mean in the context of database decompositions?
What does dependency preservation mean in the context of database decompositions?
Why is dependency preservation an important constraint in database design?
Why is dependency preservation an important constraint in database design?
What term is used to describe the dependency between BIKE_MODEL and MANUF_YEAR?
What term is used to describe the dependency between BIKE_MODEL and MANUF_YEAR?
In a lossless join decomposition, what must be true about the decomposed tables?
In a lossless join decomposition, what must be true about the decomposed tables?
What is the purpose of relational decomposition in the relational model?
What is the purpose of relational decomposition in the relational model?
How can dependencies of a relation be preserved in its decomposed tables?
How can dependencies of a relation be preserved in its decomposed tables?
What problem may arise if a relation in the relational model is not in an appropriate normal form?
What problem may arise if a relation in the relational model is not in an appropriate normal form?
What happens if a decomposition fails to preserve all dependencies of the original relation?
What happens if a decomposition fails to preserve all dependencies of the original relation?
In database design, what issues can decomposition help to eliminate?
In database design, what issues can decomposition help to eliminate?
How is a lossless decomposition defined in database design?
How is a lossless decomposition defined in database design?
What does a lossless decomposition guarantee in terms of the join of relations?
What does a lossless decomposition guarantee in terms of the join of relations?
