Synchronize Model to Database

The Synchronize Model to Database feature allows you to compare a model with an existing database or schema, states the differences between their structures, and offers synchronizing the structures in model to the target connection.

Navicat Data Modeler provides a step-by-step wizard for you to complete the task:

• In the Workspace window, choose Tools -> Forward Engineering -> Synchronize Model to Database.

• Select the source model, database, schema, and select the target connection, database, schema.

• Click Options and select the compare / advanced options.

• Click Compare to show the differences between source and target objects.

• Select the objects you want to synchronize.

• Click Next to generate a set of scripts.

• Click Start.

Choose Connections

The first step is to define the source model and the target connection.

Choose Comparing Options

Then, click the Options button to select the compare / advanced options for the synchronization process.

Option	Description
Compare auto increment value	Compare the auto increment values of tables.
Compare character set	Compare the character sets of tables.
Compare checks	Compare check constraints.
Compare collation	Compare the collations of tables.
Compare definers	Compare the definers of views.
Compare excludes	Compare exclusion constraints.
Compare foreign keys	Compare the foreign keys of tables.
Compare functions	Compare function and procedure objects.
Compare identity last value	Compare the identity last values of tables.
Compare indexes	Compare table indexes.
Compare owners	Compare the owners of database objects.
Compare partitions	Compare table partitions.
Compare primary keys	Compare the primary keys of tables.
Compare rules	Compare rule objects.
Compare sequences	Compare sequence objects.
Compare sequence last values	Compare the last values of sequences.
Compare storage	Compare table storages.
Compare table options	Compare other table options.
Compare tables	Compare table objects.
Compare triggers	Compare table triggers.
Compare uniques	Compare unique constraints.
Compare views	Compare view objects.
Drop with CASCADE	Drop the dependent database objects with the CASCADE option.
Identifier Case Sensitivity	Ignore or consider the case of identifiers when mapping, or use the server default setting.

Start Comparison

Click the Compare button to compare the source model and the target database.

View Comparison Results

After comparing structures, the tree view shows the differences between the source and target databases or schemas. Check the objects you want to apply to the target. You can expand the objects to view the detailed structure.

You can choose to group the objects in the tree views by object types or operations by selecting Group by Object Type or Group by Operation.

Operation	Description
	Object exists in both source and target databases/schemas, but they have different definition. The target object will be modified based on the source object.
	Object does not exist in the target database/schema. It will be created in the target.
	Object does not exist in the source database/schema. The target object will be deleted.
	Object exists in both source and target databases/schemas and they have identical definition. No operation will be applied.

When you select an object from the comparison results, the DDL Comparison tab displays the statements for that object from both the source model and the target database side by side. Any differences in the statements, such as added, modified, or removed fields, are highlighted for quick identification.

Furthermore, the Deployment Script tab shows the specific scripts that will be executed on the target database to apply the selected changes.

Click the Next button to show the scripts of all selected objects.

Edit & Execute Selected Scripts

You can view all scripts that will be executed in the target database in the Deployment Script tab.

Deployment Options Button	Description
Deployment Options	Continue on error - Ignore errors that are encountered during the execution process if necessary. Include deployment query in message log - Show the deployment queries in the Message Log tab during execution.
Edit Script	Open the Edit Deployment Script window to rearrange the order of the scripts.
Copy Script to Clipboard	Copy all scripts from the Deployment Script tab to the clipboard.

In the Edit Deployment Script window, use the arrow buttons to move the scripts.

Then, click the Start button to execute the scripts. The window will display the execution progress, execution time, and success or failure messages.