This model not only expresses the version and time but also reduces the data redundancy.

数据模型既体现了版本信息和时间要素，又减少了数据冗余。

youdao

This model not only expresses the version and time but also reduces the data redundancy.

数据模型既体现了版本信息和时间要素，又减少了数据冗余。

youdao