MGSC 300 Midterm 2024
The minimum number of instances of one entity that may be associated with each instance of
another entity. - ANS-Minimum Cardinality
the maximum number of entities that can be involved in a relationship - ANS-maximum
cardinality
Two vertical lines mean a t least one entity of that type is required - ANS-When is a relation
mandatory?
An oval means the entity is optional - ANS-When is a relation optional?
Add the foreign key to the row that references the key (won't work for N:M) relationships -
ANS-Where is the foreign key placed?
Excel - ANS-If it's a single theme, use ___
Database - ANS-If it's multiple themes, use _____
Reporting: Creating information about past performance
Data Mining: Classifying and predicting
Big Data: Finding patterns and relationships in enormous amounts - ANS-3 Techniques for
processing BI Data
File - ANS-Tables are
Rows in table - ANS-Records
Columns in table - ANS-Fields
Characters in table - ANS-Bytes
Refers to the level of detail represented by data, too fine or too coarse - ANS-Granularity
a data collection, smaller than the data warehouse, that addresses the needs of a particular
department or functional area of the business - ANS-Data Mart
Obtain data, both internal and external, cleanse data, organize and relate data, etc. - ANS-Data
warehouse
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 topgradesdr. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.99. You're not tied to anything after your purchase.