Besides, the material type is a keyreference factor in selecting electronic resources.
资料类型是选择电子资源的重要参考因素。
2
Here we see that the mapping for Customer's Address field links the two halves of the relationship together with the foreign keyreference in the table schema file.
Nowadays almost every countries has taken the social music education as a keyreference in measuring a country's ethnic and cultural qualities of the music and even the degree of civilization.