| | Dimensions Data Model (Site not responding. Last check: 2007-10-19) |
 | | Further, the data model provides functions to handle common tasks such as simple aggregation and the comparison and manipulation of multi-response data, freeing the programmer to focus on the unique aspects of the application. |
 | | Case (respondent) data is read and written using the standard ADO interface, using a subset of standard SQL commands, extended with a set of functions which provide such features as the ability to access and manipulate multi-response (“multipunch”) category variables. |
 | | The data model is “open” on two levels: first, it is built around open, industry-standard technologies; and second, it provides an open, published interface (API) for the use of one and all. |
| www.spss.com /Data_Model/whitepaper.htm (2780 words) |