Midterm 1 Flashcards
What is Disruptive Technology?
Can cause a paradigm shift, makes current technology not as efficient or affordable, may create opportunities for a change in the market in the future
Who normally creates new paradigms?
People outside of the current industry
What are six key observations of paradigms?
- Paradigms are common
- Paradigms are useful means of understanding; focus our attention
- Sometimes your paradigm can become THE only paradigm you recognize; Paradigm paralysis
- The people who create new paradigms are usually outsiders of the prevailing paradigm
- Those practitioners who choose to adopt a new paradigm, the “paradigm pioneers,” must be very courageous, have faith, trust in their judgment, and be willing to take risks
- You can choose to change your rules and regulations – your paradigm
What does it mean to go back to zero?
When a paradigm shift occurs, the playing field is leveled so that everyone (even leading companies in the old paradigm) starts from ground zero. Past success guarantees nothing.
What are the measures of information quality?
- Accuracy
- Completeness
- Consistency – does summary data equal the aggregation of the parts
- Uniqueness
- Timeliness
What is an entity?
Table of information; represents an object
What is an attribute?
Describes data
What are the different types of cardinalities?
One to one, One to Many, Many to Many
In One to Many cardinality where does the Primary Key go as a Foreign Key?
In the Many Entity as a Foreign Key
What do you need to do if it is a Many to Many Cardinality Relationship?
Create a linking table where each primary key from both entities become foreign keys in the new table
What is the textual representation of the ERD?
Entity Name (Primary Key (PK), Attribute, Attribute) Ex: Crew(CrewID(PK), FName, LName, PhoneNum)
What does PK stand for?
Primary Key
What does FK stand for?
Foreign Key
What is the efficiency ratio?
Output / Input (remember that bad/defective outputs don’t count
Ex: 100 Input, 90 Output with 10 Defective 90/100 = 90%
What is the Defect rate?
Defective / Output
Ex: Output was 100 with 10 Defective 10/100 = 10%
What is Gross Profit?
Sales – Costs (COGS)
What is Gross Profit Margin?
Gross Profit / Sales
What is Percentage of Difference?
((New – Old) / Old) * 100
What is Paradigm paralysis?
Being afraid to change to the new paradigm
What is the fastest cord and most expensive cord?
Fiber Optic
What is VoIP?
Voice over Internet Protocol
What is Cache Memory?
Primary Storage, processing memory
What is Hard Drive?
Secondary Storage
How many cores do you need to be able to multi-thread?
One
