sample
Haven't found the Essay You Want?
For Only $12.90/page

Entity-Relationship model vs. Semantic Object model Essay

An Entity Relationship Model, also known as an Entity Relationship Diagram, a graphical representation of entities and their relationships to each other, typically used in computing in regard to the organization of data within databases or information systems. An entity is a piece of data; an object or concept about which data is stored. A relationship is how the data is shared between entities. The three types of relationships between entities are one-to-one, one-to-many, and many-to-many.

One-to-one is when one instance of an entity A is associated with one other instance of another entity B. One-to-many is when one instance of an entity A is associated with zero, one or many instances of another entity B, but for one instance of entity B there is only one instance of entity A. Many-to-many is when one instance of an entity A is associated with one, zero or many instances of another entity B, and one instance of entity B is associated with one, zero or many instances of entity A.

A Semantic Object Model is developed from objects that are already known. This model is normally used to document a system, program, or object that is already in use and working properly. Another term for Semantic Model from the field of knowledge representation is “ontology”: the set of classes, relationships, and functions in a universe of discourse.


Essay Topics:


Sorry, but copying text is forbidden on this website. If you need this or any other sample, we can send it to you via email. Please, specify your valid email address

We can't stand spam as much as you do No, thanks. I prefer suffering on my own

Courtney from Study Moose

Hi there, would you like to get such a paper? How about receiving a customized one? Check it out https://goo.gl/3TYhaX