When the >> operator extracts information from a file, it expects to read data that are separated by

Which of the following is a poor programming practice?

a) indenting the statements in the body of each control statement b) using floating-point values as the counter in counter-controlled iteration c) using more than two levels of nesting d) placing vertical spacing above and below control statements

Which statements about data warehousing is not correct?

A. The data warehouse should be separate from the operational system. B. Data cleansing is a process of transforming data into standard form. C. Drill-down is a data-mining tool available to users of OLAP. D. Normalization is an requirement of databases included in a data warehouse.