A layout method and device for ER diagram
A layout method and layout technology, applied in the computer field, can solve problems such as time-consuming and laborious relationship recognition, complex ER diagrams, and difficulties in viewing attributes, etc., and achieve the effect of fast identification and improved layout speed
Active Publication Date: 2021-07-20
ADVANCED NEW TECH CO LTD
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[0003] However, ER diagrams are sometimes complex. For example, an employee can have multiple attributes, and there can be a one-to-many relationship between employees and departments, etc. It is difficult for users to view the relationships between entities and attributes in the ER diagram.
When the user wants to view the relationship representation of the ER diagram and build other models based on the relationship in the ER diagram, it takes time and effort to identify the relationship
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[0026] In order to enable those skilled in the art to better understand the technical solutions in one or more embodiments of this specification, the following will describe the technical solutions in one or more embodiments of this specification in conjunction with the drawings in one or more embodiments of this specification The technical solutions are clearly and completely described, and obviously, the described embodiments are only some of the embodiments, not all of the embodiments. Based on one or more embodiments in this specification, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.
[0027] ER is an effective method for describing the conceptual model of the real world. The three basic elements that constitute the ER diagram are entities, attributes and connections. figure 1 Example of a simple ER diagram, such as figure 1 Shown:
[0028] Entity: Objects th...
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The embodiments of this specification provide a layout method and device for an ER diagram, wherein the method may include: obtaining the first element and the second element in the ER diagram according to the ER diagram to be laid out; the first element and the ER diagram Other elements in the figure have associations, and the second element is an independent element; determine a relationship diagram containing a plurality of first elements and associations between elements; generate a minimum generation including the plurality of first elements from the relationship diagram tree; converting the minimum spanning tree into a radial tree; laying out the position of each first element in the layout interface according to the radial tree, and displaying the relationship among elements of each first element and the second element.
Description
technical field [0001] The present disclosure relates to the field of computer technology, in particular to a method and device for laying out ER diagrams. Background technique [0002] ER diagram, also known as entity-relationship diagram (Entity Relationship Diagram), provides a way to represent entity types, attributes and connections, and is an effective method for describing the conceptual model of the real world. There are many application scenarios of ER diagrams. For example, ER diagrams can be used to represent the relationship between students and elective courses. The functional relationship between a manager and other departments can be represented by an ER diagram. [0003] However, ER diagrams are sometimes complex. For example, an employee can have multiple attributes, and there can be a one-to-many relationship between employees and departments, etc. It is difficult for users to view the relationships between entities and attributes in the ER diagram. When ...
Claims
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IPC IPC(8): G06F16/28
Inventor 鲁志强
Owner ADVANCED NEW TECH CO LTD