Interstage Shunsaku Data Manager Operator's Guide - Microsoft(R) Windows(R) 2000/ Microsoft(R) Windows Server(TM) 2003 - - UNIX -

2.2.3 Designing the Data Structure

The data structure of XML documents stored in Shunsaku must be designed by taking into account a unit of data handled in an application.

The processing for XML documents stored in Shunsaku system is processed in a unit of XML document. The number of hits from a search by specifying a search expression is the number of XML documents that is hit. In addition, the sort and aggregation process specified by a return expression and a sort expression are also processed in XML document unit. The update process is also updated in XML document unit.

As a result, units of an access to Shunsaku system are united to an XML document unit.

Same element name can be repeated in an XML document.

However, because Shunsaku processes in XML document unit, it is necessary to consider which XML document unit is to be used in an application and design the system so that each XML document has those elements.

For example, if specify a search expression to perform the search in multiple XML document, the number of hits will be counted to 1 even more than one elements in an XML document are hit.

For the data below, the data in the left is effective for the usage of data classified by factories, however, the data in the right is appropriated for the usage of data classified by employees.