Some spatial functions in Oracle

Oracle has a wonderful spatial module. The spatial data are stored in a database as so-called SDO_GEOMETRY data type. The data in such field look like: (MDSYS.SDO_GEOMETRY(2001,90112,MDSYS.SDO_POINT_TYPE(121235,484926,NULL),NULL,NULL)). In this structure, […]

the Zachman framework

The Zachman framework is a nice example of so-called “IT Entreprise Architecture”. Such approach is directed at a comprehensive approach to the design, implementation and execution of IT strategy within […]

Using IDA

IBM launched InfoSphere Data Architect (IDA). This is a data modelling tool that acts as a competitor with Erwin and PowerDesigner. I played a bit with this tool to see […]