安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
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- ERDPlus
Free ERD modeling tool for creating Entity-Relationship Diagrams and relational star schemas, aiding in visualizing and designing databases
- ER Diagram (ERD) - Definition Overview | Lucidchart
What is an Entity Relationship Diagram (ERD)? See ultimate guide to ER diagrams including a video overview, origins, uses, examples, components, limitations, and guidelines on how to draw them for free in Lucidchart
- Entity Relationship Diagram (ERD) - What is an ER Diagram?
What is an Entity Relationship Diagram (ERD)? Learn about entity relationship diagram symbols Read the ER diagram tutorial See ERD diagram examples
- What is Entity Relationship Diagram (ERD)? - Visual Paradigm
Entity Relationship Diagram, also known as ERD, ER Diagram or ER model, is a type of structural diagram for use in database design An ERD contains different symbols and connectors that visualize two important information: The major entities within the system scope, and the inter-relationships among these entities
- A Guide to the Entity Relationship Diagram (ERD) | Database . . .
What is an Entity Relationship Diagram (ERD)? An Entity Relationship Diagram (ERD) is a type of diagram that lets you see how different entities (e g people, customers, or other objects) relate to each other in an application or a database
- What is an Entity Relationship Diagram? - IBM
An entity relationship diagram (ER diagram or ERD) is a visual representation of how items in a database relate to each other ERDs are a specialized type of flowchart that convey the relationship types between different entities within a system
- Entity–relationship model - Wikipedia
In software engineering, an ER model is commonly formed to represent things a business needs to remember in order to perform business processes Consequently, the ER model becomes an abstract data model, [1] that defines a data or information structure that can be implemented in a database, typically a relational database
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