In a Qlik Replicate Full Load task, the replication process is handled by two primary components. The SOURCEUNLOAD component is responsible for reading the data in bulk from the source endpoint. It then transfers this data to the TARGETLOAD component, which is responsible for writing the data to the target endpoint. These two components work in tandem to perform the initial, complete synchronization of the source tables to the target.

B. TARGETAPPLY: This component is used during the Change Data Capture (CDC) phase to apply cached changes (inserts, updates, deletes) to the target, not during the initial Full Load.

C. TARGETUNLOAD: This is not a standard component in the context of writing data to a target. Unloading is an action performed on a source system.

D. SOURCECAPTURE: This component is responsible for capturing ongoing data changes from the source transaction logs for CDC, which is a separate process from the Full Load.

1. Qlik Replicate User Guide (November 2023): In the section "The replication process," under the subsection "Full Load replication," the guide states: "The SOURCEUNLOAD component reads the data from the source endpoint and transfers it to the TARGETLOAD component, which writes the data to the target endpoint." (Page 41)

2. Qlik Replicate User Guide (November 2023): The same guide, in the section "Change Data Capture (CDC)," clarifies the roles of other components: "The SOURCECAPTURE component captures the changes from the source endpoint... The TARGETAPPLY component applies the changes to the target endpoint." This distinguishes them from the Full Load components. (Page 42)