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What does DIM mean in data warehouse terms?

A.

Dimension table

B.

Operational data store (ODS)

C.

Common data model (CDM)

D.

Application data service (ADS)

Your DTS (Data Transmission Service) migration has failed halfway through: what options do you

have? (Number of correct answers: 2)

A.

Delete your DTS instance and start over

B.

Restart the migration task from the console

C.

Your database can't be migrated: you need to abandon the migration

D.

You need to switch to ADAM, as DTS cannot complete the migration

You need to migrate a database that has a storage capacity of 50 GB to the cloud and can tolerate a service downtime of half an hour. In this case, which of the following migration methods is the optimal choice to migrate data to the cloud in terms of stability and availability?

A.

Full backup and incremental backup

B.

Full backup only

C.

Logical migration tools

D.

Incremental backup only

Each PolarDB cluster consists of one primary node and one or more read-only nodes. The system only support manually switch over services from the primary node to a read-only node.

A.

True

B.

False