摘要 |
A method of determining an installation order of multiple update programs corresponding to multiple pieces of software for updating current versions of the software on a computer to newer versions, includes applying a function outputting an index representing a degree of likelihood of existence of a version of software on the computer, to information about each piece of software existing on known computers, to calculate the index for each combination of the current and newer versions of the software; and searching for the installation order satisfying a predetermined condition based on a total of the indices corresponding to the combinations of the current and newer versions possibly realized when installing the update programs corresponding to the software one by one from a state of all the current versions to a state of all the new versions. |