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Database System Assignment 1




Question;Read the attached set of user requirements and create an Entity;Relationship diagram using UML notation. To receive full credit for this;assignment, your diagram must be well organized and include;Each main entity type, labeled;with an appropriate name and a designated primary key;Attributes of each entity type;All relationships between;entities, each labeled with an appropriate name;Multiplicity constraints clearly;identified for each relationship;All assumptions made when;interpreting the requirements;You may use any software with drawing capabilities (e.g., Microsoft;Word, LucidChart, or Visio) to complete this assignment;Below are the criteria that will be used to evaluate the performance of;your work on Assignment 1 (Entity Relationship Model). Level 4 indicates that;all requirements have been met and that you have demonstrated a strong;understanding of the Entity Relationship Model. Level 1 indicates that many;requirements are missing or incomplete and that you lack a general;understanding of the major concepts. Directly below each requirement and the;evaluation criteria is the point value awarded for the performance level. For;each requirement, the criteria that most closely matches your work product will;be the performance level (and points) awarded. The maximum score for this;assignment is 90 points. Late submission of assignments will be assessed a;penalty of 10% per day. Assignments more than two days late will not be;accepted and will receive 0 points.;Requirement;Level;4;Level;3;Level;2;Level;1;Entities;Every entity is labeled with an appropriate name and a primary;key. There are no missing and/or extra;entities that are not stated in the requirements.;Every entity is accurately labeled and has a primary key defined.;However, there are 1-2 missing and/or extra entities relative to the;requirements.;There are several missing and/or extra entities relative to the;requirements. Several entities lack a primary key or have been labeled;inappropriately.;Most entities, their labels, and primary keys listed in the diagram;do not correspond to the requirements.;18 Points;18;16;14;12;Relationships;Every relationship is named.;There are no missing or extra relationships that do not fit either the;requirements or assumptions made.;There are several missing and/or extra relationships. Several;relationships are poorly labeled.;There are many missing and/or extra relationships. Many relationships;are poorly labeled.;Most relationships are missing or there are an unusual number of;extra relationships.;18 Points;18;16;14;12;Multiplicity (Cardinality and Participation);Multiplicity is provided for every relationship, on both sides of the;relationship.;There is more than one multiplicity that is either missing or;wrong. This includes cardinalities;that are labeled backwards.;There are many multiplicities that are wrong or missing.;Most multiplicities are missing or do not match requirements.;18 Points;18;16;14;12;Assumptions;All assumptions are clearly stated and implemented. No assumptions conflict with requirements.;Assumptions have been made about the requirements, but not explicitly;stated.;Assumptions are stated, but not implemented in the design.;Unnecessary assumptions are made that do not fit the requirements or;implementation.;18 Points;18;16;14;12;Clarity of Presentation;The diagram uses UML notation, is easy to read, and the designer?s;intent is made clear.;The diagram uses UML notation but is difficult to read due to the;poor organization of entities.;UML notation is;not correctly used and the diagram is difficult to read.;The diagram is;unreadable or illegible.;18 Points;18;16;14;12;Total Points;90;80;70;60


Paper#36836 | Written in 18-Jul-2015

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