ER graph drawing method and device based on adjacency list node states and priorities

An adjacency list and priority technology, applied in structured data retrieval, special data processing applications, database models, etc., can solve problems such as the order of node drawing

Pending Publication Date: 2020-05-22
INSPUR SOFTWARE CO LTD
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Problems solved by technology

[0010] The present invention proposes an ER diagram drawing method based on the node state and priority of the adjacency list to solve the problem of the order of drawing nodes and the spatial position of nodes in the current ER diagram drawing, and improve the display of ER diagram drawing Effects and User Experience

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  • ER graph drawing method and device based on adjacency list node states and priorities
  • ER graph drawing method and device based on adjacency list node states and priorities
  • ER graph drawing method and device based on adjacency list node states and priorities

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Embodiment Construction

[0159] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection of the present invention. scope.

[0160] The present invention is realized by the following scheme: a kind of ER diagram drawing method based on adjacency list node state and priority, such as figure 1 shown, including the following steps:

[0161] S1: Read the database table structure;

[0162] S2: Generate an entity-relationship model based on the adjacency list;

[0163] figure ...

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Abstract

The invention provides an ER graph drawing method and device based on adjacency list node states and priorities, and belongs to the field of databases, adjacency lists, ER graph drawing, balance display, visual perception and the like. The method comprises the following steps: S1: reading a database table structure; S2: generating an entity relationship model based on an adjacency list; and S3, drawing an ER graph in combination with the node degree and the visual position priority. According to the method, the nodes are drawn according to the descending order of the node degrees, the space area of the drawing interface is scientifically utilized, and the complex associated information of the nodes with high degrees can be fully displayed; the drawing sequence of the node associated entities is arranged based on the visual perception smooth feeling, and the distribution condition of the drawn associated entities at the adjacent positions of the nodes is considered so that the fluency and pleasure of reading the ER graph by the user can be improved; and the display effect and the user experience of ER graph drawing are improved on the whole.

Description

technical field [0001] The invention relates to database, adjacency list, ER diagram drawing, balance display and visual perception technology, in particular to an ER diagram drawing method based on adjacency list node state and priority. Background technique [0002] ER diagram (Entity Relationship Diagram), also known as "entity-relationship diagram", is a graphical description of the entity-relationship model in database design. It can visually display the entities involved and the connections between them. method. [0003] The ER diagram is the best tool for relevant personnel to understand the database system, and it plays an important role in the stages of database design, development, maintenance, and reconstruction. In the process of database design, modelers need to understand the objects to be processed according to the ER diagram, and continuously improve through prototype deduction, scenario analysis, and iterative optimization, and finally form a conceptual mod...

Claims

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Application Information

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IPC IPC(8): G06F16/28
CPCG06F16/288G06F16/287
Inventor 王功明王建华
Owner INSPUR SOFTWARE CO LTD
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