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How do you draw entity relatoin in databases?

Anonymous

∙ 17y ago

Updated: 12/11/2022

If the question is for databases, then the answer is in the link. If you want to store the ERDs in a database, then the question needs to be clarified to which database.

Wiki User

∙ 17y ago

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Q: How do you draw entity relatoin in databases?

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What are the advantages and disadvantages of Entity Relationship Diagrams?

Entity-Relationship diagrams are useful for modelling data and the relationships between the data. They can be used when the constraints between data are relatively simple. They do not allow specification of interactions between the data or model how the data changes (there are no processes in Entity-Relationship). Entity-Relationship diagrams are most often used to model databases.

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To draw a relationship diagram, start by placing relationship at the center of the paper. Connect entities to the relationship, and branch out with the different attributes.

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Entity Framework is used for modeling the entities, models, relationships and logic of business problems that they have to solve. It allows developers to work with data, like customers and customers' addresses without having to worry about the databases and places where the data is stored.

How do you draw an entity relationship diagram for an airline ticket reservation centre?

http://cs.senecac.on.ca/~dbs201/pages/ERD.htm

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What is the base word of united?

It's root word is "uni", meaning "one". To unite is to draw together in to one entity.

In a database what is an entity?

WhatIs.com Definitions Database A database is a collection of information that is organized so that it can easily be accessed, managed, and updated. In one view, databases can be classified according to types of content: bibliographic, full-text, numeric, and images. Entity In general, an entity (pronounced N-tih-tee ) is an existing or real thing. The word root is from the Latin, ens , or being, and makes a distinction between a thing's existence and its qualities. An entity exists and that's all it needs to do to be an entity. The fact that something exists also seems to connote separateness from other existences or entities. In programming, engineering, and probably many other contexts, the word is used to identify units, whether concrete things or abstract ideas, that have no ready name or label. In blackboard discussions, one can draw something as yet unnamed and refer to that drawing as the representation of an "entity." (If the entity being discussed later gets ascribed qualities and a name, reference to it as an "entity" may no longer be useful.)

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The correct form is "databases." This is the plural form of the word "database" and does not require an apostrophe.

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