DBLink Data Sync Methods Explained

DBLink is a tool used for establishing remote connections between two different databases, allowing queries or updates to be made from one database’s table to another.

To achieve data synchronization, the following methods can be used:

1. Manually copy data between two databases using INSERT, UPDATE, and DELETE statements. Begin by querying data from the source database, then use INSERT statements to insert the data into the target database. For updates and deletions, you can also synchronize using UPDATE and DELETE statements.
2. Triggers are used to define insert, update, and delete operations on the source database. When these operations are performed on the source database, triggers automatically replicate the data to the target database.
3. Implement data synchronization using a stored procedure. Create a stored procedure to query data from the source database and insert it into the target database using an INSERT statement.
4. Utilize an ETL tool (Extract, Transform, Load) to achieve data synchronization. The ETL tool can extract data from the source database, transform the data if necessary, and then load the data into the target database.

Regardless of the method used, it is crucial to ensure that data consistency and conflicts are considered and addressed during the data synchronization process.