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Entity Relationship Diagram Links
| Site:
http://metr.cua.edu/faculty/mckenzie/mis327/CH04/ |
 | An Introduction to. .Object-Oriented
Analysis..Objects in plain English...Chapter 4: Data-Oriented
Models.","This website is based on the book by David W. Brown. On the
homepage, visitors are given a table of contents as an overview of what
the website contains. Above the table of contents, you can click on a
hyperlink that will take you to a page where each individual topic
contained in the table of contents is explained in very simple language.
The author presents information by using analogies that readers can relate
to and understand easily. For example, cardinality is explained in terms
of customers purchasing products - a one to many relationship is explained
as one customer purchasing several products. The website is very easy to
navigate, offers a multitude of information, and the content is very easy
to understand. |
|
| Site:http://www.cs.sfu.ca/CC/354/han/material/notes/354notes-chapter2/node11.html |
| Representation of Strong Entity Sets","Describes
and gives examples of entity relationships, more specially strong entity
relationships. |
|
| Site:
http://w.cba.neu.edu/~mzack/msc1342/slides/er/ |
| Review of Entity-Relationship Model","This web side
provides a review of entity relationship model. I liked this page because
it really helps you understand the definitions of the terms we use to
create an ERD. In this page you can find the following contents:
Review of Entity-Relationship Model
Data Models
The Entity-Relationship (E-R) Model
Entities
Attributes
Relationships
Relationships: connectivity
Relationships: participation
Weak Entities
Composite Entities
Abstraction Level of Data Model
ACCESS Relationship Diagrams
Deliverables |
|
| Site:
http://www.doc.mmu.ac.uk/STAFF/E.Ferneley/SAD/T12/erd1.htm |
| Entity Relationship Modeling","This website has a
quick introduction into entity relation diagramming and all the necessary
terms defined and illustrated. They also have a comprehensive illustration
of the problem and the related ERD. The terms defined are entities,
attributes, unique identifiers, etc that are needed to understand how to
construct an ERD. |
|
| Site:
http://itprojmngt.8m.net/softdev/analysis/erd/erd.html |
| Entity Relationship Modeling Technique (ERD)
","This website tells you what goal you are trying to achieve when
designing an ERD. It also illustrates how you would go about designing an
ERD. |
|
| Site:
http://panoramix.univ-paris1.fr/CRINFO/dmrg/MEE/misop003/ |
| Ever want to know the fundamentals of an ER
diagram? This site has powerful tools to provide users with information
regarding Entity Relationships. There is 15 links that provide detailed
information and each breaks down the parts of the diagram. Along with the
tutorial are examples that help visualize a project. This is a must-read
site. |
|
| Site:http://kogs-www.informatik.uni-hamburg.de/~haarslev/publications/avitvl96/node3.html |
| Entity-Relationship Diagrams","This website has
wonderful examples of entity relationship diagrams. It goes through with
all of the definitions of the symbols, notations, and constraints that we
discussed in class. It is an ok site. |
|
| Site:
http://www.cs.man.ac.uk/~franconi/teaching/2000/ct481/er-modelling/ |
| Entity-relationship modelling","This page has a
crash course on Entity Relationship Modelling. Many examples are given
with solutions included. |
|
| Site:
http://www.infocom.cqu.edu.au/Courses/spr2000/95169/Extra_Examples/ERD.htm |
| Developing Entity Relationship Diagrams (ERDs)","I
liked this website because it identifies the terms used for ERDs. The
website also demonstrates a problem and a step by step way of solving with
ERDs. I will use it for my notes to help me work out the review problems
for ERD. |
| This was a great web page detailing the intricacies of how to properly design an ERD to enable you the analyst to produce a good database structure so that the data can be stored and retrieved in a most efficient manner. This information is very easy to follow and all the major vocabulary is defined. |
| A very good site that graphically explains how to develop ERD’s and how the enities relate with one another. |
| This website is great beacause it explains what an Entity Relationship Diagram is and what its components are. Furthermore, it shows a methodology on how to construct an ERD in 10 simple steps. |
| This page is a good one to support the teacher's ERD's explanaition. It provides a summary of the terminology, syntax, and examples of how to use them to build an ERD. |
| The topic was explained in detail with examples when compared to other sites |
| This is a good website which gives information on how an ERD is being developed and also gives some basic information on what is ERD. The best thing about this website is it explains ERD in a step by step method so that even learners can understand the concept. |
|
| Site:
http://www.islandnet.com/~tmc/html/articles/datamodl.htm |
| Data Modeling: Finding the perfect fit","This page
deals with Data Modeling. It states that the purpose of data modeling is
to develop an accurate model, or graphical representation, of the client's
information needs and business processes. This page also states that the
data model acts as a framework for the development of the new or enhanced
application. It goes on to talk about Application Audience and Services,
entities, attributes and different types of relationships. |
| This website gives a concise outline of the data modeling process. It gives a graphical representation of entities and thier relationships. I think it is a good reference tool for those wanting a guide to creating an ERD. |
|
| Site:
http://gizmo.lbl.gov/DM_TOOLS/OPM/ER/ER.html |
| An Overview of the Extended Entity-Relationship
Database Tools ","Explains Entities, Relationships, and Attributes and the
Extended Entity-Relationship Diagram. |
|
| Site:
http://www.smartdraw.com/resources/centers/software/erd.htm |
| A software vendor adds basic info on ERDs and how
to create them.","This is a fairly basic site that discusses attributes,
entities, and relationships. |
| This is a very good website and it tells us that Entity Relationship Diagrams (ERDs) illustrate the logical structure of databases.
|
| It is a software design center. Briefly teaches reader how do draw ERD and also show Entity Relationship Diagram Notations.
|
| I thought this site was great when it comes to drawing ERD's. You can buy software that will create the ERD's for you. All you have to do it know what your attributes and entities are. |
| There is a free download called SmartDraw software which will help you draw professional ERDs |
| I like this website because it includes many helpful topics for ERD’s like What are ERDs?, Entity Relationship Diagram Notations, Types of Cardinality, Drawing ER Diagrams in SmartDraw, ERD Library, Adding an ERD Symbol to Your Page, Connecting Entities, Placing the Relationship Symbol, Drawing Cardinality and Ordinality Relationships, Adding Arrows, and Tips for Effective ER Diagrams. Plus this website also includes examples and finding resources (which includes Peter’s Chen website). |
| This website shows you how to draw Entity Relationships Diagrams. It defines and describes some context words that you need to learn for class and it provides good examples of how diagrams can be developed. Here you will learn the difference between an entity, and a weak entity. You will also learn the difference between the different types of attributes and how they are used. This site also contains important information about cardinality and relationships. |
| I liked this site since it gives an easy explanation about ERD's |
|
| Site:
http://www.softdocwiz.com/UML.htm |
| UML dictionary containing terminology used in
UML","The site contains a list of terms used in UML. There are about 600
terms in the dictionary. The terms are arranged in alphabetical order
which is very helpful. This might be a good reference to have if you're
working with UML. |
|
| Site:
http://www.technatomy.com/solutionservices/datamodeling/datamodeling.htm |
| Database Modeling Techniques and Methodologies", "Technatomy
uses a model-based approach to its development efforts. The goal of this
approach is to construct software models that represent the structure and
operations of a business as simply and directly as possible. Because these
models are not tied to any particular problem, they can be used to address
a wide range of problems, including problems that weren't even imagined
when the models were constructed. |
|
| Site:
http://www.umsl.edu/~sauter/analysis/er/er_intro.html |
| Entity-Relationship Diagrams (ERD Really good site
to help with understanding ERDs. It comes from another college and uses
examples similar to those used in class. Some topics are:Developing an ERD,
How do we start an ERD? and Reading an ERD. |
| This site provides a clear and concise explanation as to what an ERD is, what it is used for, and (must importantly)how to develop one! |
|
| Site:
http://www.thehathaway.com/ModelData.html |
| This site shows you what questions to ask when building an ERD and also explains the steps of doing it. |
| It an interesting site. I think it is effective because it uses moer exapmles to supplement the lecture. It has good examples which are easy to understand. There is also some stuff about normalization which will help in the future. I thought it was an easy read. It uses a good combination of having detailed info and a well organized freindly site. |
|
| Site:
http://www.cit.cornell.edu/atc/materials/old/dbdesign/jpa.shtml |
| Entity Relationship Diagrams are a major data modeling tool and will help organize the data in your project into entities and define the relationships between the entities. This process has proved to enable the analyst to produce a good database structure so that the data can be stored and retrieved in a most efficient manner. John Paul Ashenfelter, faculty member at the University of Virginia, presents this introductory workshop on database concepts for everyone. His interactive presentation includes a discussion of how and why to use databases in education, a demonstration of sample classroom applications developed by the speaker for use at the University of Virginia, and an introduction to database terminology and design concepts. |
|
| Site:
http://www.aisintl.com/case/olais/pb96/er_model.htm |
| This website has a complete presentation that explains what an Entity Relation diagram is. It basically covers everything we’ve covered in class, but explanations are in another form, so it helps to strengthen the concepts |
| This site basically deals with the designing the ERD's, It will be very useful for all levels of students as it deals all the way through fundamental concepts to the expert level of detail. It starts up with what is an entity,attribute, and relationships between entities and different types of relationships,cardinality etc and ends up with the final concepts like generalization ans specialization. It would be very useful for a quick review of the subject.
|
|
| Site:
http://www.cs.sfu.ca/CC/354/zaiane/material/notes/Chapter2/node1.html |
| This web site provides general information in regards to Entity - Relationship model. It focuses on concepts such as "generalization", "aggregation" and representation of strong and weak entities. The site itself is not that well-designed. |
| I found it brief but well explained key concepts and techniques for the design of Entity Relationship Diagrams. |
| This site belongs to school of computing science in Simon Fraser University in canada. It is course website of Database Systems and Structures. The topics are divided into chapters and the second chapter exclusively deals with Entity Relationship model. |
|
| Site:
http://www.w3schools.com/sql/default.asp |
| SQL is an ANSI standard computer language for accessing and manipulating databases! This web page is a SQL tutorial where anyone can learn how to use SQL to access, define, and manipulate data in Oracle, DB2, Sybase, Informix, Microsoft SQL Server, Microsoft Access, and other database systems. This web site is very cool since it also contains answers to questions that we may commonly have regarding this topic.
|
|
| Site:
http://www.umsl.edu/~sauterv/analysis/er/er_intro.html |
| Developing, starting, and reading an ERD. Easy to visualize because of use of flow charts.
|
| I found this website very helpful to understand ERD's as a begginer and this a tutorial slide from another university |
| The website provide a basic and detail description about the ER diagram and the how to use them. It also mentions some sources for ER Diagram in internet. I liked it. |
| Describes the basic features of an ERD gives an idea how to build one. |
|
| Site:
http://wofford-ecs.org/DataAndVisualization/ermodel/index.htm |
| The page starts explaining the different levels in the database design, starting from the conceptual design, and then explains how the creation of an ER diagram helps understand and specify the desired components of the database and the relationships among those components. It gives definitions and examples of ERD, entity, attributes, relationships, and constraints. I liked it because is simple and interactive. |
|
| Site:
http://www.databasedesigning.com/ER1.html |
| This is a wonderful site that explains, fairly well, the concepts behind ERD. Objects of ER Diagram and the corresponding symbols are explained with relevant examples. Additionally, there are several links that will certainly help the user to understand the unfamiliar key words. |
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This page
was last updated on
02/26/09.
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