How to view relationship diagram in mysql

View a graph in MySQL by performing the following steps: 1. Connect to the database; 2. Execute the query: GRAPHVIZ DOT; 3. Export the image (PNG, JPEG, or SVG).

How to view the relationship diagram in MySQL

The steps to view the relationship diagram in MySQL are as follows:

1. Open the MySQL command line client

Open the MySQL command line client on your computer. You can do this by entering the following command in the terminal or command prompt:

<code>mysql -u 用户名 -p 密码 -h 主机名 -P 端口号</code>

2. Connect to the database

Use the following command to connect to the database you want to view Database for diagrams:

<code>USE 数据库名;</code>

3. Execute query

To see a graphical representation of all tables in the database, execute the following query:

<code>GRAPHVIZ DOT</code>

This query will generate a relationship diagram that contains the following information:

• Names of tables
• Relationships between tables
• Names and types of columns

4. Export Image

To export the diagram as an image, use one of the following commands:

• PNG:GRAPHVIZ DOT -Tpng -o filename.png
• JPEG：GRAPHVIZ DOT -Tjpeg -o filename.jpg
• SVG：GRAPHVIZ DOT - Tsvg -o filename.svg

Example

The following example demonstrates how to view a relationship graph in MySQL:

<code>mysql -u root -p
USE my_db;
GRAPHVIZ DOT;
GRAPHVIZ DOT -Tpng -o my_db_relationships.png</code>

After executing these commands, a relationship diagram PNG file named my_db_relationships.png will be created in the current directory.

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