Database connection failure: If Navicat is unable to connect to the database, the changes to the table cannot be saved. Make sure that the database server is running and verify that the database connection information is correct.
Insufficient user permissions: If the current user does not have enough permissions to create or modify tables in the database, Navicat will not be able to save changes to the table. Please contact the database administrator to obtain the necessary permissions.
Table name is duplicated: If the table name you are trying to save is already existing in the database, Navicat will not be able to save the changes made to the table. Please modify the table name and try saving again.
Lack of necessary fields or constraints: If essential fields or constraints (such as primary keys, foreign keys, etc.) are missing in the table design, Navicat may not be able to save changes to the table. Please ensure that the table design meets the requirements of the database.
The database version is not compatible: Navicat may not support certain features of specific database versions, causing changes to tables not to be saved. Please make sure the version of Navicat being used is compatible with the database version.
If the database file is damaged or encounters other issues, it may prevent Navicat from saving changes to tables. Try repairing the database file or restoring from a backup file.
