# SCD components

| [tDB2SCD](https://help.qlik.com/talend/r/en-US/7.3/components/scd/tdb2scd) | Addresses Slowly Changing Dimension needs, reading regularly a source of data and<br>logging the changes into a dedicated SCD table |
| --- | --- |
| [tGreenplumSCD](https://help.qlik.com/talend/r/en-US/7.3/components/scd/tgreenplumscd) | Addresses Slowly Changing Dimension needs, reading regularly a source of data and<br>logging the changes into a dedicated SCD table. |
| [tInformixSCD](https://help.qlik.com/talend/r/en-US/7.3/components/scd/tinformixscd) | Tracks and shows changes which have been made to Informix SCD dedicated tables |
| [tIngresSCD (deprecated)](https://help.qlik.com/talend/r/en-US/7.3/components/scd/tingresscd) | Reflects and tracks changes in a dedicated Ingres SCD table. |
| [tMSSqlSCD](https://help.qlik.com/talend/r/en-US/7.3/components/scd/tmssqlscd) | Tracks and reflects changes in a dedicated SCD table in a Microsoft SQL Server or<br>Azure SQL database. |
| [tMysqlSCD](https://help.qlik.com/talend/r/en-US/7.3/components/scd/tmysqlscd) | Reflects and tracks changes in a dedicated MySQL SCD table. |
| [tNetezzaSCD](https://help.qlik.com/talend/r/en-US/7.3/components/scd/tnetezzascd) | Reflects and tracks changes in a dedicated Netezza SCD table. |
| [tOracleSCD](https://help.qlik.com/talend/r/en-US/7.3/components/scd/toraclescd) | Reflects and tracks changes in a dedicated Oracle SCD table. |
| [tPostgresPlusSCD](https://help.qlik.com/talend/r/en-US/7.3/components/scd/tpostgresplusscd) | Addresses Slowly Changing Dimension needs, reading regularly a source of data and<br>logging the changes into a dedicated SCD table. |
| [tPostgresqlSCD](https://help.qlik.com/talend/r/en-US/7.3/components/scd/tpostgresqlscd) | Addresses Slowly Changing Dimension needs, reading regularly a source of data and<br>logging the changes into a dedicated SCD table. |
| [tSybaseSCD](https://help.qlik.com/talend/r/en-US/7.3/components/scd/tsybasescd) | Addresses Slowly Changing Dimension needs, reading regularly a source of data and<br>logging the changes into a dedicated SCD table. |
| [tTeradataSCD](https://help.qlik.com/talend/r/en-US/7.3/components/scd/tteradatascd) | Addresses Slowly Changing Dimension needs, reading regularly a source of data and<br>logging the changes into a dedicated SCD table. |
| [tVerticaSCD](https://help.qlik.com/talend/r/en-US/7.3/components/scd/tverticascd) | Tracks and reflects data changes in a dedicated Vertica SCD table. |