1 / 22

Data Warehouses

Data Warehouses. Transportation leadership you can trust. Applications and Alternatives. presented to Safety Data Analysis Tools Workshop presented by Eric Ziering Cambridge Systematics, Inc. March 27, 2006. A Little Background.

cocheta
Download Presentation

Data Warehouses

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Data Warehouses Transportation leadership you can trust. Applications and Alternatives presented toSafety Data Analysis Tools Workshop presented byEric ZieringCambridge Systematics, Inc. March 27, 2006

  2. A Little Background • Cambridge Systematics: Leading transportation consulting and full software/IT firm • Recent safety-related software/IT projects: • Commercial Vehicles: Leader in CVISN: credentialing & electronic screening systems • TransXML – Data interchange standards for transportation – Prime; Lead in the Safety Business Area • Massachusetts Traffic Records Contractor

  3. Data Warehouse - Overview • A repository for safety-related data • Typically assembled by compiling information from many participating agencies and organizations • Key challenges are in integrating and creating linkages across the data. • Fundamental infrastructure for value-added applications that tap into the data warehouse.

  4. Safety Portal • Point of access to the Data Warehouse • Practical tool for safety evaluation and planning • Tabular retrieval • Map-based retrieval • Analytic models • Central point for communication for a statewide (regional, multi-state corridor) safety community

  5. Things to Consider – Alternatives • Crucial Issue: Linking of information from varied sources • Basics generally contained in the crash records file (MMUCC or NHTSA/TransXML standard) • Advanced analysis requires additional linkages: • Incident ID: crash, EMT • Driver license/ID: Citations & other driver records • Location: crash, characterstics of roadway, pavement, guard rails, etc., traffic and characterstics • Other Personal ID: linkages to medical records; patient IDs • Planning applications go one step further

  6. Things to Consider - Project Planning • User Needs Assessment • Which user communities are important? • Which capabilities are essential? • Which features drive data quality? • Incremental Implementation – Roll out in phases. • Encourage evolution of needs and system design • Invest in manageability • Build a system that can be readily maintained and updated

  7. Things to Consider – Technical Issues • Hardware and hosting (web, Intra/Internet, security) • Choice of operating system and database • Crucial Documentation (beyond user guides) • System Design and database documentation • Disaster recovery plans • System administrator documentation • Transition plan

  8. Things to Consider – Administrative Issues • Intra-Agency Legal Agreements (Liability, DPPA, etc.) • Controlling Access to Data • Public Records • Limits on Personal or Highly Personal Information • Tighter Linking of diverse databases  increased administrative controls And one more thing…

  9. One More Thing… • Your data warehouse will soon be obsolete… • Internet enablies live integration of diverse databases • “Web Services” – each system accepts requests from many applications to deliver records, tables, and other information • Many issues will disappear: redundancy, scheduling updates, security and administration • Plan for next generation of primary systems; design and build incrementally

  10. Data Warehouses Transportation leadership you can trust. Applications and Alternatives presented toSafety Data Analysis Tools Workshop presented byEric ZieringCambridge Systematics, Inc. March 27, 2006

More Related