A.Qualifier HBase column: each column represents an attribute of business data

B.Realize the division of labor: DBAs focus on data table modeling, developers focus on user table names and columns used

C.Column user table column: each column represents a KeyValue

D.Visual modeling helps DBAs in modeling design and lowers the threshold for using HBase

A.HRegionServer

B.ZooKeeper

C.HDFS

D.LHMaster

A.Kafkat but intra-cluster data recovery

B.Kafka data backup within a single cluster

C.Kafka cross-cluster data synchronization scheme

D.None of the aboveA. True