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Exam 2 Management 3300 mizzou Christianson Questions with Correct Answers
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Exam 2 Management 3300 mizzou Christianson Questions with Correct Answers
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Exam 2 Management 3300 mizzou ChristiansonQuestions with Correct Answers
structured information Correct Answer-Usually considered to be facts
and data. It is reasonably orderly, and can be broken down into
component parts and organized into hierarchies.
unstructured information Correct Answer-has no inherent structure or
order, and the parts can't be easily linked together. It is more difficult to
break down, categorize, organize, and query. Drawing information out
of unstructured collections presents challenges.
semi-structured information Correct Answer-shows at least some
structure.
Meta Data Correct Answer-- Where you took a photo
• Who you called and for how long
• Who did you send an email to and when did you send it.
• When you login to facebook, snapchat or tinder.
• How long your car was turned on
• etc, etc, etc.
Relational integrity constraint Correct Answer-rule that enforces basic
and fundamental information based constraints
,Business-critical integrity constraint Correct Answer-rule that enforce
business rules vital to an organization's success and often require more
insight and knowledge than relational integrity constraints
two relational integrity constraints for an ordering system Correct
Answer-• Users cannot create an order for a nonexistent
customer
• An order cannot be shipped without an address
two business-critical integrity constraints for an ordering system Correct
Answer-• Product returns are not accepted for fresh
product 15 days after purchase
• A discount maximum of 20 percent
Password Correct Answer-provides authentication of the user
Access level Correct Answer-determines who has access to the different
types of information
Access control Correct Answer-determines types of user access, such as
read-only access
Edgar F. Codd Correct Answer-Relational Databases
, Primary Key Correct Answer-Indicates uniqueness within records or
rows in a table.
-Primary keys ideally composed of only single
attribute
attribute
• Modern Database Management Software can
auto-number Primary Keys (1,2,3,4....) and
make sure they are unique
Foreign Key Correct Answer-the Primary key from another table, this is
the only way join relationships can be established.
The Entity Relationship (ER) Model Correct Answer-• ER model forms
the basis of an ER diagram
• ERD represents conceptual database as viewed by
end user
• ERDs depict database's main components:
- Entities
- Attributes
- Relationships
Cardinality Correct Answer-• Cardinality expresses the number of
records in an entity to which other record(s) in a different entity can be
associated via the relationship between the two entities
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