Interstage Shunsaku Data Manager Application Development Guide - Microsoft(R) Windows(R) 2000/ Microsoft(R) Windows Server(TM) 2003 - - UNIX -

6.5 Deleting Data by Direct Access Key

If the contents inside the XML documents to be deleted are known in advance, execute the delete process (hereafter referred to as 'direct deletion') using direct access key. The different between the direct deletion and the normal deletion by record ID in the 4.3 Deleting Data is that the direct deletion does not need to obtain the record ID of XML documents to be deleted.

With the direct access key, the search process for obtaining the record ID is not necessary. Therefore, the delete process is easy and fast.

The Flow of the Direct Deletion

The following figure shows the flow of the direct deletion.

[Figure 6-7 The flow when using the direct deletion]

• An API for direct deletion can delete multiple specified direct access keys at a time.
• If the XML document including the direct access key specified in the direct deletion API does not exist, the deletion API will be terminated normally.
• If the XML document including the direct access key specified in the direct deletion API is being updated by other applications, the deletion API will be error in order to guarantee the integrity of the data. In this case, wait for the update to finish, then re-execute the deletion API again.
• If the identity of the direct access key is not guaranteed, all XML documents that the element nodes have the same direct access key will be deleted.

The following sections explain how to delete data using direct access key with Java API,.NET API and C API.

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6.5.1 For Java API

6.5.2 For .NET API

6.5.3 For C API