4) Data mining is a tool for allowing users to (1pts) quickly compare transaction data gathered over many years. find hidden relationships in data. access the vast amounts of data in a data warehouse. summarize massive amounts of data into much smaller, traditional reports. obtain online answers to ad-hoc questions in a rapid amount of time. 5) A one-to-many relationship between two entities is symbolized in a diagram by a line that ends with two short marks. three short marks. one short mark. a crow's foot topped by a short mark. a crow's foot. 6) Which common database challenge is illustrated by a person receiving multiple copies of an L.L. Bean catalog, each addressed to a slightly different variation of his or her full name? data accuracy data inconsistency data duplication data normalization data redundancy (1pts) (1pts)