Home  >  Article  >  Database  >  How to associate two tables in navicat

How to associate two tables in navicat

下次还敢
下次还敢Original
2024-04-24 11:15:24997browse

Associating two tables involves the following steps: Open the windows of the two tables, drag and drop the fields to be associated, and select the association type (one-to-one, one-to-many, many-to-many). Considerations include field data type consistency, creating join tables, and associations that do not change table data. Example: Drag and drop the Customer ID from the Customers table to the Customer ID from the Orders table to relate the two tables.

How to associate two tables in navicat

Associating two tables in Navicat

How to associate two tables?

To associate two tables in Navicat, you need to follow the following steps:

  1. Open the table window of the two tables that need to be associated.
  2. Left click the mouse on the field to be associated.
  3. Drag and drop the field to the corresponding field in another table.

Types of associated tables

Navicat supports the following types of table associations:

  • One-to-one (1 :1): Each record in the first table has only one corresponding record in the second table, and vice versa.
  • One-to-many (1:M): Each record in the first table can have multiple corresponding records in the second table, but each record can only have multiple corresponding records in the second table. A corresponding record is in the first table.
  • Many-to-many (M:N): Each record in the first table can have multiple corresponding records in the second table, and each record can also have multiple corresponding records in the second table. The corresponding records are in the first table.

Notes on related tables

  • Ensure that the fields to be related have the same or compatible data types.
  • When relating tables, Navicat will automatically create a connection table that contains the values ​​of the associated fields of the two tables.
  • You can create multiple associations to connect multiple tables.
  • Associating tables does not change the data in the table.

Example: Relating customer and order tables

Suppose there are two tables: Customer and Order. To associate these two tables, follow these steps:

  1. Open the table window for the Customers and Orders tables.
  2. Drag the Customer ID field in the Customer table and drop it onto the Customer ID field in the Order table.
  3. Now the two tables are related through the Customer ID field.

The above is the detailed content of How to associate two tables in navicat. For more information, please follow other related articles on the PHP Chinese website!

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact [email protected]