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Move the data from the mainframe to a server where it can be accessed from the user’s PC
Snapshot data, NOT live
Use for data analysis, NOT operational
Data extracted periodically. Changes on the mainframe may not be reflected on the warehouse for a week or more. Transcripts are on the warehouse, but official transcripts are only available through ISIS.
AIS Three-Tier Data Structure EIS summary data Data Warehouse detail data extracted periodically ISIS, IBIS, ADIS detail transactions processed immediately Enterprise Information System extracts data from the warehouse and summarizes it Data Warehouse extracts detail data from the mainframe on a periodic schedule On-line transactions update the mainframe systems immediately
Data goes through a series of steps as it is moved
to the warehouse:
Establish a schedule to refresh the data. Frequency depends on volatility of the data. Some refreshed weekly, some once per semester
How is the Warehouse Accessed? Data Warehouse End Users Query Tool to retrieve data Tools are off-the-shelf software that run on the desktop. Users can purchase whatever package they want based on platform, price, preference.
More Detailed Information ... on our Web Site http://ais.its.psu.edu/dataware/ Web site contains data documentation, instructions for setting up your PC to access the warehouse, sample queries, schedules for training and user group meetings.