COMPUTERS AND COMPUTERS AND STATISTICS IN STATISTICS IN

ARCHAEOLOGYARCHAEOLOGY

Week 6. The Geodatabase: Week 6. The Geodatabase: adding attributes and adding attributes and querying spatial data querying spatial data

© Richard Haddlesey www.medievalarchitecture.net

The GeodatabaseThe Geodatabase

A database is a collection of A database is a collection of information that is structured and information that is structured and recorded in a consistent mannerrecorded in a consistent manner

Conolly and Lake 2006, 51

The GeodatabaseThe Geodatabase

A DBMSA DBMS• Quick access to, and the ability to select Quick access to, and the ability to select

subsets of data, potentially by several subsets of data, potentially by several users at the same timeusers at the same time

• A facility for inputting, editing and A facility for inputting, editing and updating dataupdating data

• The ability to define and enforce rulesThe ability to define and enforce rules• Protect data against unintentional Protect data against unintentional

destructiondestruction

Conolly and Lake 2006, 51

The GeodatabaseThe Geodatabase

A GIS program needs to store, A GIS program needs to store, manage and retrieve manage and retrieve bothboth geographical and attribute data geographical and attribute data

Attribute data can be added in Attribute data can be added in ArcView or externally in MS AccessArcView or externally in MS Access

NormalisationNormalisation

Flat fileFlat file

Conolly and Lake 2006, 52

NormalisationNormalisation Relational structureRelational structure

Conolly and Lake 2006, 52

NormalisationNormalisation http://www.utexas.edu/its/windows/database/datamodeling/rm/overview.htmlhttp://www.utexas.edu/its/windows/database/datamodeling/rm/overview.html

Conolly and Lake 2006, 51-5Conolly and Lake 2006, 51-5