CMIS 320 Project 4 ATTACHED IS THE ASSIGNMENT
CMIS 320 Project 4
ATTACHED IS THE ASSIGNMENT
Grading rubric
| Attributes | Meets | Does Not Meet |
| Normal form | 20 points
Student correctly identifies normal form of initial relation |
0 points
Major error in identification of normal form or not specified |
| Primary key | 25 points
Student correctly identified primary key of initial relation |
0 points
Major error with identification of primary key or not specified |
| Data anomalies | 15 points
Student correctly describes data anomalies |
0 points
Major errors with description of data anomalies or not specified |
| Functional dependency diagram | 15 points
Student correctly develops functional dependency diagram of initial relation |
0 points
Major errors developing functional dependency diagram or not specified |
| Normalized 3NF relations |
CMIS 320 Project 4Examine the following relation and its attributes and answer the following questions. Assume these arethe values for “all time”.Assume girls with the same name are the same person.GIRLGROUP AGEGAME CATEGORYPRICECharlotte5 year olds5MirrorMakeup4.88Susan6 year olds6Lipstick Makeup5.95Jane5 year olds5ChessGames7.55Susan6 year olds6CheckersGames5.95Susan6 year olds6MirrorMakeup4.88Carrie6 year olds6Lipstick Makeup5.95Jacqueline5 year olds5Visual BasicProg. Languages199.991)Is this relation in at least 1NF?Why or why not?2)What is the primary key of the initial relation (assume the values shown are the onlypossible tuples for all time)?Remember that a primary key must be unique and notnull.3)Describe the specific data anomalies that exist if we DELETE the tuple containingJacqueline.4)Draw a functional dependency diagram for the initial relation.This diagram shouldagree with the primary key you selected in above.5)Based on your diagram, what normal form is the initial relation in?Why?6)If necessary, decompose the initial relation into a set of non-loss 3NF relations byshowing the relations, attributes, and tuples.Show complete relations with attributeheadings and all data values in the tuples of your relations.Determine the number of3NF relations you end up with after normalization, write this number, and then circlethe number.
Grading rubricAttributesMeetsDoes Not MeetNormal form20 pointsStudent correctly identifies normalform of initial relation0 pointsMajor error in identification of normalform or not specifiedPrimary key25 pointsStudent correctly identified primarykey of initial relation0 pointsMajor error with identification ofprimary key or not specifiedData anomalies15 pointsStudent correctly describes dataanomalies0 pointsMajor errors with description of dataanomalies or not specifiedFunctional dependencydiagram15 pointsStudent correctly develops functionaldependency diagram of initialrelation0 pointsMajor errors developing functionaldependency diagram or not specifiedNormalized 3NFrelations25 pointsStudent correctly develops theproper set of 3NF relations vianormalization0 pointsMajor errors in development of properset of 3NF relations or not specified
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