20 Questions
Which normalization form aims to eliminate transitive dependencies?
3NF
What is the major goal of relational database design?
Group columns into tables
Which type of update anomaly occurs when extra data must be added to the database beyond the desired data?
Insertion anomaly
What happens when tables break the rules of 1NF, 2NF, and 3NF?
Data redundancy increases
Why can tables with redundant data suffer from update anomalies?
They introduce inconsistencies into the database
What is the primary key for the table that contains details of member of staff and branch?
staffNo
Which type of anomaly occurs when deleting a row inadvertently causes other data to be deleted?
Deletion anomaly
What must be known to insert a course (CourseNo) according to the text?
StdSSN and OfferrNo
Which table contains redundant data causing update anomalies?
StaffBranch table
What problem occurs when changing multiple rows to modify only a single fact?
Update anomaly
What is the major aim of relational database design?
Minimizing data redundancy
Which type of update anomaly occurs when extra data beyond the desired data must be added to the database?
Insertion anomaly
What problem occurs when tables break the rules of 1NF, 2NF, and 3NF?
Update anomalies
Which normalization form aims to eliminate transitive dependencies?
3NF
Why can tables with redundant data suffer from update anomalies?
They introduce inconsistencies into the database
What is the primary key for the table that contains details of member of staff and branch?
staffNo and branchNo
What must be known to insert a course (CourseNo) according to the text?
Offering number
Which normalization form aims to eliminate transitive dependencies?
Third Normal Form (3NF)
What problem occurs when changing multiple rows to modify only a single fact?
Update anomaly
Which type of anomaly occurs when deleting a row inadvertently causes other data to be deleted?
Deletion anomaly
Learn about the importance of normalization in database design and the rules associated with first (1NF), second (2NF), and third (3NF). This quiz covers the identification of various types of update anomalies such as insertion, deletion, and modification anomalies found in tables that break the rules of normalization.
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