data warehousing and datamining

Which one is correct for data warehousing?

• It can be updated by end users

• It can solve all business questions

• It is designed for focus subject areas

• It contains only current data

Data Mining is the set of methodologies used in analyzing data from various dimensions and perspectives, finding previously unknown hidden patterns, classifying and grouping the data and summarizing the identified relationships

• True

• False

"Process of sifting through large data sets to identify and describe patterns, discover and establish relationships with an intent to predict future trends based on those patterns and relationships". What does this statement explain about?

• Visualization

• Representation

• Data mining

• Business intelligence

What is an operational system in data warehousing?

• A system that is used to process the day-to-day transactions of an organisation
• A system that sets up the data warehouse
• A system that runs the data warehouse
• A system that identifies error in the data warehouse

Is the data in a dataware house generally updated in real-time?

• Yes
• No

What does OLTP stand for?

• Online transaction processing
• Offline transaction processing
• Outline trajectory processing
• Online traffic processing

What is a Data Mart?

• A data mart is a subgroup of the data warehouse
• A data mart is another type of data warehouse
• A data mart is not actually related to data warehouses
• None of these

data warehousing used in_______________

• transaction system

• decision support system

Data mining means______

• data fetching

• data accesing

• knowledge discovery

a data warehouse can include

• flat-files

• database table

• online data

• all