# Talend Data Catalog: migration

Talend Data Catalog 7.3 was made generally available in R2020-01.

| Item | Description | Available in |
| --- | --- | --- |
| Talend Data Catalog<br>upgrade to 7.3 | Talend Data Catalog<br>7.3 requires a new installation. Follow the migration steps as described in [Migrating Talend Data Catalog 7.1.2 to 7.3](https://help.qlik.com/talend/r/en-US/7.3/data-catalog-installation-and-upgrade-guide-linux/migrating-from-71x-to-73). | <ul>Available in:<li>Data Catalog Advanced Edition</li><li>Data Catalog Advanced Plus Edition</li><li>Data Catalog Standard Edition</li></ul><br><br>All Talend<br>on-premises Data Catalog licenses |
| Migration of single database models | Talend Data Catalog<br>7.3 now harvests new database models as multi-model by default. You need to<br>convert the existing single database models into multi models. For more<br>information, see *Talend Data Catalog Guide*. | <ul>Available in:<li>Data Catalog Advanced Edition</li><li>Data Catalog Advanced Plus Edition</li><li>Data Catalog Standard Edition</li></ul><br><br>All Talend<br>on-premises Data Catalog licenses |