Translation of "Compatibility" in Japanese

It is important to maintain backward compatibility with software that was written to run on the former system.

旧システム用に書かれたソフトとの上位互換性を保つのは大切です。

Please tell me the degree of compatibility between a type B Capricorn man and a type O Libra woman.

山羊座B型の男性と天秤座O型の女性の相性を教えてください。