Entity Relationship Diagrams Essay.

Entity Relationship Diagrams Essay.

This is a unique kind of model that tries to illustrate the relationship that exists between data in a database. The construction of an entity relationship diagram always manipulates symbols to illustrate the relationship between the information contained in that specific database. The rectangular or box like figures are regularly used to represent entities, the diamond figures are normally used to illustrate the affiliation that exist between the information while the ovals are used to embody the elements. Hence in the literature below all this will be manipulated to illustrate what entity relationship diagrams constitute and how it’s  are applicable to medicine where there is a relationship between data given by a patient and hospital data and information given by a doctor. This is because the sufficiency of any health center relies on the information that a patient gives and the flow of information that between departments.Entity Relationship Diagrams Essay.

ORDER A PLAGIARISM-FREE PAPER HERE

An entity hence is the space provided in which data will be stored within the database (System) under contemplation. E.g. in the case of medicine, an entity may be named as:

Another element that may constitute a database is the contour that connects two entities that symbolizes the relationship between two entities. The relationship will have attributes that will be showing the affiliation that exists between the data that is connected by the line and has an event that both must be conventional to.Entity Relationship Diagrams Essay.

The line indicated shows the relationship that exists between data that are contained in both entities. It shows a mutual relationship between the two entities: Information of the first entity that is related to the second and that of the second that is related to the first. Hence, in an entity relationship illustration, the main issue is the identification of the traits in different entities and the affiliation that might exist in the information contained in each and actually drawing the affiliation in the form of a diagram that can illustrate a systematic flow. This will show that the aim of the entity relationship diagram has been achieved. That is the identification of the different entities, the information contained, and the relationship that exists in the information contained in each and every entity and being able to make it flow.Entity Relationship Diagrams Essay.

The relationship that is always included in an entity relationship diagrams always mean different things in an entity illustration diagram, hence most of the cardinality restraint are as explained:
A double line shows a sharing restraint, where by both entities set and the shared information must contribute in a minimum of one affiliation in the relationship lay down.
A one sided arrow from one entity to another showing the relationship between the two sets illustrates a key restraint i.e. either of the two entities can contribute in the relationship in at most one trait in the symbiotic affiliation.
A concentrated line (Thick) illustrates that the two entities are embroiled in only one affiliation that is unidirectional from one entity to another.
A line that is underlined shows that it is a unique attribute that is unique to each entity and different information.Entity Relationship Diagrams Essay.

Anne, A. (2000). On the ontological clarity of entity-relationship diagrams: associative object type indicators and weak entity sets. London: University of Queensland.
Elizabeth, H. J. (2010). Requirements Engineering. New York: Springer.
Pericles, L. (1994). Entity-relationship approach– ER ’94: business modelling and re-engineering. 13th International Conference on the Entity-Relationship Approach (pp. 13-16). United Kingdom: Springer.Entity Relationship Diagrams Essay.

Answers

Related Questions

POS 221 - Week 3 - Individual: Group Policy, Secur...

 Complete Exercises 1, 2, and 3 within the Practice Lab this week titled, "Create Group Policy Objects".Complete Exercises 1, 2, and 3 within the Pra...

Deliverable 4...

 CompetencyThis competency will allow you to examine the challenges of leading change and identify a real-life situation in which change was successf...

Deliverable 3...

 CompetencyThis competency will allow you to explain and compare various leadership theories.InstructionsThe company you work for has asked you to pr...

Deliverable 2...

 InstructionsLeadership is either formal or informal, and it is important to discover which one is a better fit for you as you grow in your career. Y...

POS 221- Week 3 - Individual: Group Policy and Sto...

 Based on your Week Three Learning Team Collaboration discussion, write a 1- to 2-page technical document on how files and folders are protected on W...

POS 221 - Week 2 - Individual: Active Directory®...

 Complete Exercise 3 within the Practice Lab this week titled, "Install and Configure Server".Complete Exercises 1, 2, and 4 within the Practice Lab...

POS 221 - Week 2 - Individual: Installation of Win...

 Based on your Week Two Learning Team Collaboration discussion, write a 1- to 2-page technical document on how to install Windows® Server 2012 on t...

Developing the Brand Strategy...

 Due Date:  Wed, 1/24/18  Deliverable Length:  10–15 slide PowerPoint with 200–250 words speaker notes per slide Scenario:  Mobile Manufac...

can u help...

Choose the correct answer.1. The functions of the autonomic nervous system are based on receptor activity. Autonomic drugs act via all of the followin...

POS 221 - Week 1 - Individual: Installing and Conf...

 Complete Exercises 1 and 2 within the Practice Lab this week titled, "Install and Configure Server".Complete Exercises 1, 2, and 3 within the Practi...

Application 2 – Annotated Bibliography...

  Application 2 – Annotated Bibliography  As part of your doctoral seminar for this set of weeks, you are participating in a seminar-style discu...

NTC 247 - Week 5 - Individual: Acme Graphic Design...

 Finalize your plan by adding one page that identifies new trends in wireless technology the company should research for the WLAN solution.Consolidat...

NTC 247 - Week 4 - Individual: Acme Graphic Design...

 Reflect upon your Learning Team discussion on wireless security.Design a table that identifies the security mechanisms for your wireless network and...

NTC 247 - Week 3 - Individual: Acme Graphic Design...

 Create a table or diagram using Microsoft® Word or Visio®, showing the frequencies/channels that will be used for your network design and the loca...

NTC 247 - Week 2 - Individual: Acme Graphic Design...

 Select Blueprint1 or Blueprint2.Create a 2- to 3-page Network plan with justification, using Microsoft® Word, describing the network plan for your...

NTC 245 - Week 5 - Individual: Disaster Recovery a...

 Review the two Pluralsight modules on disaster recovery and cloud computing.Create the following:A 1-page comparison sheet suitable for presentation...

Assessing Reliability and Credibility of CAM Resou...

  Create a 11- to 13-slide Microsoft® PowerPoint® presentation on a methodology you create for assessing credibility and reliability of an Interne...

NTC 245 - Week 5 - Individual: Local Area Network...

 Using your Week Four faculty feedback, complete the development of a Local Area Network plan for Taylor & Sons Financial Consulting, including the l...

Ass1PMF...

 Complete Chapter 2 from  Principles of Managerial Finance 14th ed. -   Integrative Case 1: Merit Enterprise Corp. Be sure to cover/address each o...

NTC 245 - Week 3 - Individual: Local Area Network...

 Write a 1- to 2-page document using Microsoft® Word explaining the network design that was discussed by your Learning Team.The document should incl...

NTC 245 - Week 3 - Individual: Network Fundamental...

 Watch the Pluralsight course "Network Fundamentals and Protocols" with Daniel Lachance.Note: This video discusses the difference between physical an...

forum 3...

Forum includes several steps:Write a research problem that would be best studied using a probability sample. Discuss why this research problem is bes...

NTC 245 - Week 2 - Individual: LAN Diagramming...

 Using your Learning Team discussion as a starting point, create a logical diagram for Taylor and Sons using the diagramming tool of your choice. Ref...

Econometrics...

A proper regression   is a major portion of the grade for the assignment. It needs a discussion of the data you collected, a discussion of the stren...

If you didn't find the right answer

Ask Your Questions, We'll notify you once someone answers it