Data Archiving with XML Data Archiving Service (XML DAS)
Context
Data archiving in the Java application system is based on XML Data Archiving Service (XML DAS) . Some archiving objects from ABAP application systems also use XML DAS . You need an external store for the archived data.
Details about XML DAS Data Archiving
During data archiving with XML DAS , a resource in the form of an XML file is created for each data object. The system uses a predefined home path to write resources to the hierarchically organized archive store in one step. Each resource has its own URI (Uniform Resource Identifier).
Define Archiving Sets (in the Java application system) or XML Archiving Objects (in the ABAP application system) that bundle data into complete business objects during XML DAS data archiving. Define which archiving programs are to be executed.
Components of XML DAS Data Archiving
The following figure illustrates the components belonging to XML DAS Data Archiving and how they communicate with one another.
|
Component |
Description |
|---|---|
|
Archive Store |
You can use a file system or a WebDAV server to store archived data objects. |
|
XML Data Archiving Service (XML DAS) |
The XML DAS contained in AS Java processes the archiving requests from the application system and manages the store. XML DAS can run on a Java application system or on a separate AS Java. |
|
Application system |
The application system contains the data to be archived (in the database). The communication between the archiving job bean (AS Java) or the XML archiving program AS (ABAP) and XML DAS using the relevant XML Archive API . The log is either HTTP or HTTPS. In the application system, you need to define a connection to XML DAS . |
|
XML DAS Administration |
You can find the XML DAS administration functions in NetWeaver Administration (NWA) . This is where you register stores and assign the home paths under which applications store archived resources. |
|
Data Archiving |
You execute data archiving either from the Java application (if available) or in the Java Archiving Cockpit . In the ABAP application system, XML DAS data archiving takes place with archive administration (transaction SARA). |