What is a data model and what is its purpose?
A data model is a representation of the content, relationships, and
constraints of the data needed to support the requirements. It i
Chapter 5 Normalization of Database Tables
Normalization of Database Tables
Why are some table structures considered to be bad and others good and
how do you recognize the difference between good and bad structures?
From an info
HyperCase Experience 9
James B. Gardner, II
IF Client Type is equal to Existing Client
THEN Client equals Existing Client
GET Client Name PRINT LINE to Client Name
GET Address PRINT LINE to Address
GET Email Address PRINT LINE to Email Address
GET Phone N
Ring Central for Business
Ring Central does not have setup fees or activation fees for its VOIP services. The only
hardware that has to be purchased are the VOIP phones. Each line will need its own VOIP
phone. The phones can be BYOD, or they can be pur
Deciding on who to interview in each department is kind of challenging in this task, because I
dont know the titles of the different people in the departments. I would interview the registrar
because they would know what information would be good for the
Chapter 6. Problems 1, 2, 4.
Its probably not worthwhile to prototype the new form under these circumstances, because
one of the biggest reasons a prototype should be used will be omitted. Prototypes are best
utilized when early and co
MIS 396 - Systems and Network Administration
College of Business and Professional Studies
Mississippi University for Women
Course Syllabus, Fall 2016
2. Your latest project is to combine two systems used by Producers Financial. Angie Schworers loan
application system is fairly new, but has no documentation. Scott Wittmans loan management
system is older, need
Figure is a level 1 data flow diagram of data movement in a Niagara Falls tour agency called
Marilyns Tours. Read it over, checking for any inaccuracies.
a. List and number the errors that you have found in the diagram.
b. Redraw and label the data flow d
Michael Bush owns a store specializing in travel gear and clothes. Manufacturers have their own
coding, but there are many manufacturers. Set up data elements for six different travel hats from
three different suppliers.
ELEMENT DESCRIPTION FORM
1. Using the INVOICE table structure shown in Table P5.1, write the relational schema, draw its
dependency diagram and identify all dependencies (including all partial and transitive
dependencies). You can assume that the table does not contain repeating
Chapter 3 The Entity-Relationship Model
Define entity and give an example.
An entity is something of importance to the user. Something the user wants to track.
Explain the diffe
Answers to Selected Questions and Problems-Edition9
Page 1 of 64
Answers to Selected Questions and Problems
Chapter 1 Database Systems
Answers to Selected Review Questions
2. Data redundancy exists when unnecessarily duplicated data are found in the datab