The
update of an existing database instance with the installation file SDBUPD is performed in accordance with a certain update strategy. Which of the possible strategies is selected by SDBUPD depends on the database instance type and the software versions.Database Instance Type
Currently, it is only possible to perform an update with SDBUPD for the database instance types
SAP DB OLTP and
liveCache (for SAP APO).
Software Versions
SDBUPD determines the SAP DB software versions (and, if appropriate, the SAP APO release) of the existing database instance and the software package to be installed. On the basis of this information, the program decides whether an update is possible and which strategy it uses.

You can find the Upgrade for SAP APO documentation as follows: