tailieunhanh - GLAST Ground Software Workshop January 2001 - SLAC

Greenplum Database utilizes a shared-nothing, massively parallel processing (MPP) architecture that has been designed for business intelligence and analytical processing. Most of today’s general-purpose relational database management systems are designed for Online Transaction Processing (OLTP) applications. Since these systems are marketed as supporting data warehousing and business intelligence (BI) applications, their customers have inevitably inherited this less-than-optimal architecture. The reality is that BI and analytical workloads are fundamentally different from OLTP transaction workloads and therefore require a profoundly different architecture | Tracker Construction Database GLAST Ground Software Workshop January 2001 - SLAC Luca Latronico - INFN Pisa DB requirements relevant info for subsystems integration implementation custom or available products DataBase Requirements Level structure wafer- ladder- tray- tower - hybrids detectors mechanics data flow parallel levels with interface crosschecks series of test operations with data input workflow Distributed - repeated access input - industry - different institutes italy pisa trieste roma2 perugia bari - different steps of production selection ex. working chans before after bonding VI measurement before after irradiation output - data flow between levels - data crosschecks ex. badchans hybrids OR sensors - easy interface to allow statistics for quality production - interface to geometry files for calibration and science analysis central repository WEB local servers WEB need backup at each update logfiles to register access Integration info SSD ID series number tester place date geometrical manufacturer pre-rad global wafer thickness length pitch cut mask alignment strip x strip implant metal width electrical manufacturer pre-rad post-rad C global Cdepletion C strip x strip Ccoupling Cinterstrip - bad chans list R strip x strip Rbias V-I global Vdepletion .