Модель сущность-связь (ER-модель) — модель данных, позволяющая описыва translation - Модель сущность-связь (ER-модель) — модель данных, позволяющая описыва English how to say

Модель сущность-связь (ER-модель) —

Модель сущность-связь (ER-модель) — модель данных, позволяющая описывать концептуальные схемы предметной области.
ER - модель используется при высоко уровневом (концептуальном) проектировании баз данных. С её помощью можно выделить ключевые сущности и обозначить связи, которые могут устанавливаться между этими сущностями.
Во время проектирования баз данных происходит преобразование ER-модели в конкретную схему базы данных на основе выбранной модели данных (реляционной, объектной, сетевой или др.).
ER-модель представляет собой формальную конструкцию, которая сама по себе не предписывает никаких графических средств её визуализации. В качестве стандартной графической нотации, с помощью которой можно визуализировать ER-модель, была предложена диаграмма сущность-связь (ER-диаграмма)
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Entity-relationship model (ER-model) is a data model to describe the conceptual scheme of the subject area.ER-model is used when high level (conceptual) database design. It can identify key entities and relationships that can be established between these entities.During the database design transforms the ER model in your database schema based on the selected data models (relational, object, network, etc.).ER-model is a formal structure which in itself does not prescribe any graphical tools its visualization. As a standard graphical notation, with which you can visualize the ER model was proposed by the entity-relationship diagram (ER diagram)
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The essence of the Model (ER model) - data model that allows you to describe the conceptual diagrams subject area.
ER - model is used when highly before continuing onto (conceptual) design data bases.You can even use it to allocate the key fact and indicate connection, which can be installed between the entities.
During the design data bases is the transform ER-model in a specific database schema based on the selected data model (relational, object, or network etc. ) .
ER-model is a formal structure, which is in itself does not prescribe any graphical tools for its visualization. As a standard graphic notation,With which you can visualize ER-model, was proposed by the diagram the essence of relationship (ER-diagram)
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