CIS 515 STUDY Great Stories/cis515study.com CIS 515 STUDY Great Stories/cis515study.com | Page 17

reviewing the system, you find that the data structure holds redundant
data and that this structure lacks normalization. The database has the
following characteristics:
•A table that stores all the salespersons. The table holds their employee
id, first name, last name and “Tours sold” field. The “Tours sold”
field is updated manually.
•A table that stores tour customer data and tours sold. The table holds
customer name, address, city, state, zip code, tour(s) selected, number
of persons in tour, and total amount paid. The current structure will
show the customer more than once, if the customer books multiple
tours.
•A tour table that is used as a tour rate sheet which holds the tours
offered and the cost per person. Tour rates vary every three (3) months
depending on the tourist season.
Write a three to four (3-4) page paper in which you propose an
enhanced database management strategy. Your proposal should
include the following:
1.Design a data model that will conform to the following criteria:
a.Propose an efficient data structure that may hold the tour operator’s
data using a normalization process. Describe each step of the process
that will enable you to have a 2nd Normal Form data structure.
b.Create naming conventions for each entity and attributes.
c.Conclude your data model design with an Entity Relationship Model
(ERM) that will visually represent the relationships between the tables.
You may make use of graphical tools in Microsoft Word or Visio, or