大家好,
小的初学SQL,
目前学完RDBMS, Graph and NoSQL
还是分不太清楚三者的差别
目前遇到题目是问:
A shopping cart in an e-commerce site is ideally suited for the use of a
________________ type of database..
选项有flat file DB
Graph DB (我选了 因为这次测验范围就是Graph DB 但被骗了...orz)
relational DB (正确答案)
non-relational
真是很瞎
因为在老师给的NoSQL讲义中
写到: building a shopping cart? think about a key-value store?
所以是因为graph DB 没有primary and foreign keys吗?
可是NoSQL Data model 有key-value store
觉得很沮丧 因为没有考好...:(
向大家请益