ALMIS Database Fundamentals. Topics ALMIS Database History Table Layout How to read a table definition Table constraints and Triggers Core Tables Table.

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Presentation transcript:

ALMIS Database Fundamentals

Topics ALMIS Database History Table Layout How to read a table definition Table constraints and Triggers Core Tables Table Load Order Structure Changes

ALMIS IS: America’s Labor Market Information System

The ALMIS System is: A Joint effort between the Employment and Training Administration of the U.S. Department of Labor and the States to: -conduct research, -develop products, and -deliver Information to job seekers, employers, economic developers, planners and other users.

What is the ALMIS Database? In Computer Terminology: The ALMIS Database is a Normalized, Relational Database Structure, Developed for the Storage and Maintenance of Labor Market, Economic, Demographic and Occupational Information.

History of the ALMIS Database ALMIS Database Version 1.0 Originated from Two Existing Databases _NOICC’s Occupational Labor Market Information Database or OLMID _North Carolina’s Human Resource Information System Database

History continues … - August 1996 : Work Began on the ALMIS Database structure - April 1997: ALMIS Database Structure Version 1.0 Delivered to States - Spring 1997: Formation of the ALMIS Database Maintenance Consortium - Summer 1998: Definition and Release of “Core Tables” under the P/Y 1998 One Stop LMI Grant

What Kinds of Information are Included in the ALMIS Database? Some of the Types of Information Which Can be Found in an ALMIS Database Include: - Population - Employment Projections -Tax Information- Mass Layoffs -Income - Labor Force Estimates -Employment - Sales Tax - Government Transfer Payments and -much more, such as…...

ALMIS Database Structure The table layout for the ALMIS Database:  Lookup tables  Data tables  Crosswalk tables  Tables of standard field values  Administrative tables

Common Relational Database Terms:  A Database is a structured collection of data, stored in tables  A Table is a collection of records related to one another  A Primary Key is a field or combination of fields that uniquely identifies each record in a table  A Foreign Key is when a value in one table matches the primary key of another table

Common Relational Database Terms Continued:  A Data Table is a table consisting of a collection of data records - A Look Up Table is a foreign key table  A CrossWalk Table is a table that relates coding structure in the database  An Administrative Table is a table that contains information on the data and tables in the ALMIS Database

Load Order

ALMIS Database Structure Changes Version 1.1 to 2.3 Number of Tables Added:36 Number of Tables Changed: 42 Number of Tables Deleted:11 Number of Tables Unchanged:72

New Table Elements in 2.3 from 1.1 For Data Tables That Have Changed: CES: benchmark, suppression Empdb: (several fields changed) ESDATA: stattype, esorders, newapp, referrals INDPRJ: nchg, growcode INDUSTRY: firms, m1emp, m2emp, topempav LABFORCE: benchmark LICHIST: licnumtyp MLSCLAIM: claimtyp MLSEVENT: dwvertype *OESWAGE: (entire table) - new core table

New Table Elements in 2.3 from 1.1 **continued** For Data Tables That Have Changed: OCCPRJ: nchg, growcode PROGRAMS: compltyp, progtitle, url SALES: salestyp STFIRMS: lat, long, naicscode, axnaicscd STINDPRJ: nchg, growcode STOCCPRJ: nchg, growcode UICLAIMS: claimtyp, indcode + occcode, agegroup, racethn, gender *URL: (entire table)-new core table WAGE: periodyr, periodtype, period, respondent, empcount

Triggers A trigger is a fragment of code that you tell the server to run before or after a table is modified. A trigger has the power to INSERT UPDATE DELETE

Why have Triggers? 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 ALMIS DB tables. Can not have a foreign key field length that is different than the primary key it is referencing.

Trigger Example Action: Insert new soccode “959595” Soccode table Trigger fires! Action: Automatically inserts new soccode “959595” Occcode table

Core Data Tables Income Empdb CES Industry Labforce Populatn *Database Administrator may opt to populate one or both of these data tables Wage* Indprj Occprj Iomatrix Income License Oeswage*

ALMIS Resource Center Connecticut Florida Georgia Illinois Iowa Massachusetts Montana  Nebraska  Nevada  North Carolina  Oregon  South Carolina  Wisconsin  ETA  NCSC

How to contact ARC: ALMIS Resource Center c/o Employment Security Commission Of North Carolina 700 Wade Avenue Raleigh, North Carolina