DWDM

Which of the following is Apache data warehouse

• Hbase

• Sqoop

• HDFS

• HIVE

Preprocessing step used in data

• Cleaning

• Intergration

• Transformation

• Redution

Bridge between dataware house and decisions support application

• Logical data

• Complex data

• Nominal data

• Meta data

Fact consteliation is also known as

• Star schema

• Snowflake

• Micro

• Galary schema

In data mining the slice operation performs a selection on

• One dimension

• Two dimension

• Multi dimension

• None of the above

Which operation used to access data online and analysis

• ROLA

• OLAP

• MOLAP

• HOLAP