INFN-Pisa

Glast Database in Pisa

A practical solution based on MSAccess

Luca Latronico INFN Pisa

INFN-Pisa

Requirements and conventions

Requirements from Proposal of conceptual design of the GLAST Tracker Construction Database (UCSC – SLAC – INFN Pi – Hiroshima Un.) soon in CyberDocs

• local independent DBs at various institutions • central SLAC DB for higher level data (i.e. production monitoring during construction)• interface between local DBs• local DB take care of data flow from local suppliers• web read-only access to local DBs

Naming Conventions from Naming Convention for GLAST Tracker Construction and Tray Orientation in Tracker Tower – UCSC• for each part unique ID + location

Part ID location (example) Strip S0123 - - -Detector DH00012 [A-D] (L0001B)Ladder L0001 [F0-B3] (T123B2)Tray T123 [G1tr0-G16tr18] (G03tr18) - - - - - - - - -

• include ManID in ladders, trays• enrich tray coding to include type (superglast, top, bottom)

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MS AccessPros• availability (institutes, manufacturers)• runs on Windows (manufacturers)• built-in import/export of Office docs (e.g. Excel worksheets)• familiar “look” (manufacturer)• no extra cost (manufacturer)• lots of wizards and predefined macros to speed up programming and reporting• SQL compliant

Cons• limited workflow control (mandatory fields)• limited web access• web I/O possible in principle but ……• forced to program in VB and ASP for web scripts• very little insight into core of db • no automatic backup• no user access/action log file

evaluation prototype in use and under development

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System properties

• relational DB engine : MS Jet Access• distributed on local NT network• security : NT accounts/permissions + project accounts• one data repository (back-end DB)• distributed user interfaces (replicated)• data and interface backups (replicated)• manual backup by replicas synchronization tool• web interface (queries/reports) connected to a data server copy through ODBC DSN• ASP scripts running on a test PWS (unstable) • core data repository upgradeable to SQL Server for real client/server architecture, if needed

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System architecture

I/O

Central repository

Local replicas

Web client

ODBCASP

(read-only)

DB InterfaceUsers offices

Clean room

DB Interface

DB Interface

I/O

DB Interface

Data

backup

DB Interface

Data

Datadata serverProduction

and qualitymonitoring

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Data Transfer

localDBexport

SQL queryexchangetable

exchangetable

exchangeDB

ftp

import SQL query

Local Institute/Manufacturer Pisa

requests for manufacturers:• MSAccess2000• run export query• upload Pisa server

exchangetable

exchangeDB

link

PisaDB

requests for institutes:• local DB supporting SQL and ODBC• set up a server (Pisa, SLAC)

two working examples using Access as local DB:• ladder assembly from local supplier• TMCM from UCSC

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Relationship

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Main DB mask

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Example queries for SSD selection

relevant parameters sort

test/production date selection

V depletion selection

example

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Example Report I

Selected time

SSD statistics

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Example Report II

Ladders statistics

report content can be exported to Excel for

further analysis

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Plans

• finalize data queries and periodic reports for monitoring• translate queries and reports into scripts for remote production monitoring• install a full-functioning web server• test web interface• get feedback from users:

• improve interface• check speed with much data• write and test data queries for selection

• get feedback from tracker community• agree on data transfer protocol… local copy available on laptop …