1. Module 3 ********* Database Structure Workforce Information Database Training Last update November 2006

2. Module 3 Database Structure

3. Module 3 Database Structure WORKFORCE INFORMATION DATABASE LOGICAL DATA MODEL FOR LONG-TERM EMPLOYMENT PROJECTIONS

4. Module 3 Database Structure Two Considerations of the Workforce Information Database Structure GEOG and SUBGEOG tables (refer to handout) State-defined field values

5. Module 3 Database Structure Updates to Workforce Information Database Versions Reasons to update: Keep current (new data tables added or changes in source data) Address needs of the states Make the database structure responsive to customer needs Correct errors

6. Module 3 Database Structure Two Types of Workforce Information Database Releases Interim Release Done on as needed basis Correct omissions, errors Try to implement only changes that have no or little effect on existing customized software Changes are voted on by the Analyst Resource Center

7. Module 3 Database Structure Two Types of Workforce Information Database Releases Full Release Changes can be more substantial than in the interim release Changes in full release can have more impact on custom software & developers Draft of proposed changes are delivered to states for review and comment States can submit comments and suggestions to the Analyst Resource Center

8. Module 3 Database Structure Two Types of Workforce Information Database Releases Full Release - continued Each comment and suggestion is examined by members of the structure subcommittee Changes may be made based on the comments and suggestions Final draft version of the structure is submitted to the Analyst Resource Center for vote Version is released to states, along with supporting materials

9. Module 3 Database Structure Workforce Information Database Releases [Formerly ALMIS Database] Two Full Releases Version 1.0 Version 2.0 Four Interim Releases Version 1.1 Version 2.1 Version 2.2 Version 2.3

10. Module 3 Database Structure Depending on your state’s implementation and use of the Workforce Information DB, you may not be working with the most current version! Survey Says: Approx. 96% have Version 2.3 in development/test environment and 79% have Version 2.3 in production environment

11. Module 3 Database Structure Versions 2.2 and 2.3 have “Triggers”

12. Module 3 Database Structure Versions 2.2 and 2.3 have “Triggers”

13. Module 3 Database Structure Trigger Example Soccode table Action: Insert new soccode “959595” Trigger fires! Occcode tableAction: Automatically inserts new soccode “959595”

14. Module 3 Database Structure Why have the Occcode & Indcode tables? Can not have conditional foreign keys as was happening in the case of the multi- code fields in many of the Workforce Information DB tables. Can not have a foreign key field length that is different than the primary key it is referencing.

15. Where to go for help: Workforce Information DB Expert E-mail: almis@ncmail.net Phone: 919.733.2936 www.workforceinfodb.org [Click on “Helpdesk”] National Crosswalk Service Center (NCSC) www.xwalkcenter.org E-mail: ncsc@iowa.gov Phone: 515.242.5034 Or contact a fellow Workforce Info DBA Module 3 Database Structure ?