Abstract: Utilizing change data capture methodology, a computer facilitated historical data warehousing system accepts transactional/operational data having no directly tied dates from a legacy source system and processes that data into a subject-oriented format that is optimized for analytical and query reports via a two step process comprised of pre-processing and transforming. The pre-processing step entails a serial modification of data with only the last modification being recorded. The transforming step involves linking related data by utilizing reusable primary keys and dates obtained from an RDBMS in an operation system of the legacy source system that supplied the transactional/operational data.

Abstract: A crease plow folder for folding a sheet or continuous web of sheets comprises a non-twisting, holding and transporting mechanism for holding and transporting the sheet or continuous web of sheets in a non-twisting fashion during folding of the sheet. The crease plow folder first creates, at a score line in the sheet or sheets, a rolling fold by directing the sheet or sheets between a centerline-twisted bar and a pressure bar. The rolling fold is then converted into a creased fold by moving the sheet or sheets between a crease roller and an idler roller, thereby generating a change in direction that results in the crease. A controller and associated sensors are included for monitoring the progress of the sheet through the plow folder and for detecting any skewing of an entering sheet.