预定义常量

以下常量由本扩展模块定义，因此只有在本扩展模块被编译到 PHP 中，或者在运行时被动态加载后才有效。

SDO_DAS_ChangeSummary::NONE=0 (integer)

Represents a change type of 'none'.

SDO_DAS_ChangeSummary::MODIFICATION=1 (integer)

Represents a change type of 'modification'.

SDO_DAS_ChangeSummary::ADDITION=2 (integer)

Represents a change type of 'addition'.

SDO_DAS_ChangeSummary::DELETION=3 (integer)

Represents a change type of 'deletion'.