noun
maximum number; maximum; limit
Used in computing and technical contexts to refer to the largest possible number or count, such as array size, connections, or capacity.
このデータベースの最大接続数は100です。
The maximum number of connections for this database is 100.
配列の最大数はプログラムで定義されています。
The maximum number of elements in the array is defined in the program.
上限 means 'upper limit' or 'cap' and is used in broader contexts (e.g., budget, speed), whereas 最大数 is more technical and numeric.
Compound of 最大 (maximum) + 数 (number). A straightforward technical term.