Database Model Diagram Symbols

Pre-drawn database model diagram symbols represent entity, view, relationship, parent to category, category, category to child, dynamic connector, line connector, strong entity, etc. These symbols help create accurate diagrams and documentation.

Edraw software includes many entity relationship shapes, entity, view, relationship, parent to category, category, category to child, dynamic connector, line connector, strong entity, strong relationship, weak relationship, attribute, derived attribute, etc.

Database Model Diagram Symbols

Database Model Diagram Shapes

The following picture shows the entity relationship symbols, including entity, view, parent to category, category to child, dynamic connector, line connector, strong entity, weak entity, strong relationship, weak relationship, attribute, derived attribute, constraint and participation, etc.

Database Model Diagram Symbols

Entity

Entity in a database could be a single person, place, or thing about which data can be stored.

Relationship

Relationship provides useful information that could not be discerned with just the entity types. Relationships are meaningful associations between or among entities like assigning, associating, or tracking.

Category

Categories are tables that are subtypes of a parent table. In relation to a database , an entity is a single person, place, or thing about which data can be stored.

Strong entity

Strong entity is one that exists on its own, independent of other entities.

Weak entity

Weak entity is one whose existence depends on another entity. A weak entity cannot be uniquely identified by its attributes alone.

Strong relationship

Strong relationships are connections that exist between a strong entity type and its owner.

Weak relationship

Weak relationships are connections that exist between a weak entity type and its owner.

Attribute

Attribute is a piece of information which determines the properties of a field or tag in a database or a string of characters in a display.

The following picture is the object relationship symbols including entity, relationship, view, parent to category, category to child, table inheritance, type, type inheritance and dynamic connector.

Database Model Diagram Symbols 2

Type and type inheritance

Type of a relationship is created depends upon how related objects are defined.

Type inheritance is an additional property offered by hierarchy within structured complex data.

Features of Database Model Diagram Symbols

To ease the drawing process, a special action button is added to Multiply process shape. It will show when the shape is selected. With the floating action button, you can make modifications directly on the shape, without need to draw another one.

Change Process Type

Entity 2 shape is divided into two parts by a line. You can move the line by dragging the yellow diamond handle.

Change Entity Shape

Need fresh looking database model diagram symbols for your design? These database model diagram symbols are a cinch to pop in. And their crisp, fine detail will make spectacular, easy-to-understand diagrams and presentations to your customers.

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