Exam (elaborations)
Chapter 5 - MISY 5300 QUESTIONS WITH SOLUTIONS
- Course
- Institution
Chapter 5 - MISY 5300
[Show more]
Content preview
Chapter 5 - MISY 53001NF (First Normal Form) - answerable is in this form when it does not contain repeating
groups, each column contains atomic values and no duplicate records
2NF - answeris a progression beyond 1NF that organizes the columns into smaller
relation, no partial dependencies
3NF - answerinclude rules of 2NF but also exclude transitive dependencies. - No
transitive dependencies exist
4NF - answerall requirements meet of 3NF
Further data integrity rules have been applied to remove all potential data modification
anomalies
algoirthm - answerdefined set of steps to solve a problem
atomic value - answeris a piece of data that cannot be meaningfully divided.
Boyce-Codd Normal Form (BCNF) - answerA special type of third normal form (3NF) in
which every determinant is a candidate key
candidate key - answerAn attribute, or combination of attributes, that uniquely identifies
a row in a relation.
Codd's 12 rules - answerdefines what is required from a DBMS in order for it to be
considered relational
Codd's relational model of data - answerthe original normalization process
composite key - answerAn identifier consisting of a combination of
two or more fields that is used when more than one column is necessary to make a row
unique in a table; also, an index with more than one key field.
data modification anomalies - answerstoring info from multiple topics in one list creates
problems when entering, updating and deleting information. Three types, insertion,
update and delete anomalies
Deletion Anomaly - answer- unintended loss of data due to deletion of other data
- Ex: If a professor retires, data with his name deletes creating data deleted about
current students
field - answerattribute, column
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller julianah420. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $15.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
81989 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now