Apr 14, 2012
This article that I chose went over the introduction of a temporal extension to the EER model and the query language GORDAS. The authors introduced the idea of lifespan to an entity by using a temporal element. Temporal attribute values were defined to be functions from the time domain to the attribute domain of an entity. They [...]
By joshualatham Category: Database Design and Development (CIS 305) Tags: attribute, EER, Entity Relationship, ER, model, temporal
Jan 23, 2012
The article, “How to Draw an Architectural Data Model in UML”, by David C. Hay, talks about the differences of UML model and ER model. At the beginning of the article, the author described the development of entity/relationship data model which was formalized in 1970′s. Two decades later, the Unified Modeling Language (UML) was officially [...]
By Polun Lee Category: Database Design and Development (CIS 305) Tags: Data modeling, Entity Relationship, object oriented, UML
Jan 23, 2012
The article I read talks about how important it is to create an ER Diagram, and how it should be the starting point for software development projects. According to the article, “The very first step to create an ER Diagram is to identify the nouns (entities)”. For example: Company, Employee, and Project. The article explained [...]
By Jamal Akbar Category: Database Design and Development (CIS 305) Tags: Basic Diagram, Common Relationship, diagram, Entity Relationship, er diagram
Jan 23, 2012
The peer-reviewed journal I read discussed reasons that students have trouble grasping and learning data modeling. The main reason being that students have a hard time identifying the relationships among the entities, and not so much in how to express the relationships. Students who do not learn how to identify relationships and thus create them [...]
By Kevin Quihuiz Category: Database Design and Development (CIS 305) Tags: Data Model, Entity, Entity Relationship, Relationship
Jan 13, 2012
In the article that I read, it said that when you start working on data modeling you’re eventually working on something that will lead to database design. Before data modeling become popular, some people saw data administration and information groups as obstacles because it slowed down development. However, companies soon came to the conclusion that [...]
By Penny Poon Category: Database Design and Development (CIS 305) Tags: Data modeling, Database, Entity Relationship
Oct 16, 2011
Summary: The article relates to the week’s lecture in that it relates to ER modeling. The article was about an update to a piece of data modeling software for the iPad. The company, Permeative Technologies, is known for making “drawing apps’ and distributing their apps through the app store. They recently updated their ER [...]
By Alexander Vu Category: Database Design and Development (CIS 305) Tags: CloudERD, data model iPad, Draw ER, Entity Relationship, ER, ER Model, ER Model iPad, iPad, Models!, Relationship Model
Oct 9, 2011
Summary: The topic of data modeling has always been hard for students to grasp. Even though the there are many techniques on data modeling, no one standardized method has been agreed on by educational institutions. In order for developers to understand the connections between entities and their relationships they first must study the entity relationship [...]
By James Castro Category: Database Design and Development (CIS 305) Tags: Data modeling, Entity Relationship, UML
Oct 9, 2011
Summary: When is it time for something new? When is a good time to trade up? Is it similar to buying a smart phone? Waiting for the new model later that year? Is it when the industry chooses a standard like Blue Ray or VHS? On the other hand, is it like buying a car [...]
By Stephen Ore Category: Database Design and Development (CIS 305) Tags: CIS 305, Data modeling, Database Design and Development (CIS 305), Entity Relationship, ERD