Optimization of an upgrade process of an original system

A non-transitory computer-readable storage medium storing code representing instructions that when executed are configured to cause a processor to perform a process, the code comprising code to:

• identify a plurality of databases of an original system for upgrade;
• calculate a plurality of parameter values representing aspects of the plurality of databases;
• for each of the plurality of databases, convert a parameter value into a degree of membership within a set representing the parameter value;
• rank each of the plurality of databases based on the degree of membership;
• and
• select at least a portion of the plurality of databases for upgrade during uptime of the original system based on a limitation of an upgrade resource and the ranking of each of the plurality of databases.

A method including executing instructions recorded on a non-transitory computer-readable storage media using at least one processor, the method comprising:

• identifying a plurality of databases of an original system for upgrade;
• calculating a plurality of parameter values representing aspects of the plurality of databases;
• for each of the plurality of databases, converting a parameter value into a degree of membership within a set representing the parameter value;
• ranking each of the plurality of databases based on the degree of membership;
• and
• selecting at least a portion of the plurality of databases for upgrade during uptime of the original system based on a limitation of an upgrade resource and the ranking of each of the plurality of databases.