Comparing Chen's, Crow's Foot, and IDEF1X: Modeling Languages for Database Relationships

Running head: CHEN VS CROWS FOOT NOTATION VS IDEF1X
CHEN VS CROWS FOOT NOTATION VS IDEF1X
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1CHEN VS CROWS FOOT NOTATION VS IDEF1X
Introduction
The aim of this report is to describe the way problems can be solved with the use of
different modeling languages. The chosen modeling language for this report are Chen’s,
Crow’s foot and IDEF1X. With the help of Crow’s Foot diagram the relative cardinality of
the relationship can be determined. The problems faced with developing a proper relationship
between the entities can be avoided with the following modeling techniques. The report will
describe about the importance of modelling language and the way it will help in avoiding the
problems. The report will also provide solution towards this problems.
Problem
Modelling techniques are used for completing the project and also helps in analysis
process by gathering loopholes within the system. An entity-relationship diagram (ERD)
helps in data modeling technique. This allows the user to illustrate the information systems
entities and relationship between each entity with the graphical illustrations. Basically an
ERD is a representational and conceptual model that is used for the purpose of representing
the data within the entity framework. With the implementation of this technologies the visual
representation can be done effectively. This technology are the best tools that allows easy
communication within the system. This technology will help to provide proper assistance
towards the database designers. ERD is the complete combination of data flow diagram that
results in producing effective visual representation. Apart from this, the technology will help
to provide with effective communication and will allow flow of effective information within
the system. The user will be able to easily understand the relationship between the different
fields. This offers the user to understand the relationships between entities easily that are
created by the expert designers. There are different variables used for representing the
information with different shapes. This will help the user to understand the diagram more

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easily. Moreover the ERD model offers high flexibility. The database can be linked among
the information with effective relationship models. ERD helps in computing the data that are
maintained within a database or within an information system. The main issue that is faced
with the development of ERD is to develop a consistent relationship among the entities.
Proper identification and development of relationship is important so that each modelling
technique can be adopted with maximum benefit. Crow’s foot helps in working with complex
database system. Every type of complex database can be managed with this modelling
language. This uses Visio list shapes for organizing the attributes within the entity. On the
other hand Chen’s model helps to define the data that can be implemented successfully within
the relational database. IDEF1X is used Integration DEFinition for managing information
modelling (IDEF1X). This is basically a data modelling language that is used for
development of semantic data models. This are also used for the purpose of developing a
graphical information model that mainly aims at representing the structure along with
semantics of information within the system. This modelling language will help the user to
overcome the challenges and problems faced by them.
Solutions for the identified problem
The problem of database management system has been identified in this report and for
the solution to the problem the modelling techniques are used. The modelling techniques help
in identification of the main entities and the classes associated with the system. The main
modelling concept to be used is the Entity Relationship Diagram.ERD is a form of
Conceptual (Data) Modelling. It establishes the main (classes of) Entities and the nature of
the relationships between them. ERD can employ different notation variations. The main
variations in notations which are considered for the report are CHEN, CROWS FOOT
NOTATION and IDEF1X. Entity Relationship diagram visually shows the various entities
(tables) and relationship between entities ie, how two tables are inter-related and their

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cardinality. eg, one to one , one to many or many to many. In addition to this, the ER
Diagram is also helpful in the identification of the different attributes which helps in defining
the physical model of the database. The problems of the relations can be solved very easily
with the help of this technique. The technique would provide the information about the
references on the tables in the database. In addition to this, the physical model would also be
assisted to a great extent. The model would be able to define the primary keys and the foreign
keys, which would be helpful for the developer to understand and create the database
accordingly. In addition to this, the candidate keys for the system would also be identified
with the help of the Entity Relationship diagram modelling technique.
Terminology, Concepts and details of CHEN VS CROWS FOOT
NOTATION VS IDEF1X
Integration definition is mainly used for information modelling is basically a data
modelling language that is used for the purpose of developing semantic data models. This
terminology is used for the purpose of producing graphical information model and helps in
representing the structure related to semantics information within the environment. This
concepts are used for several purpose that includes planning of data resources that includes
planning for the preliminary data model that are used to provide overall view and needs to
run an enterprise. This models are further used for the purpose of analysing the scope of the
projects and the data resources that will be used for development of the project. Apart from
this building of shareable databases is also for fully developed model. Apart from this it also
helps in generating databases that are consistent and shareable and helps in development of
the cost with the help of data modelling. Apartfrom this evaluation of vendor software also
becomes important for representing the infrastructure of the organization. This is a
technology that is mainly used for the purpose of semantic data modelling technique. This are
mainly used for the purpose of graphical information model that are further used for