如何理解mongoDB和SQL數(shù)據(jù)的區(qū)別?
SQL數(shù)據(jù)庫-NoSQL數(shù)據(jù)庫=SQL...
MongoDB這種非關(guān)系型數(shù)據(jù)庫實(shí)際上是關(guān)系數(shù)據(jù)庫的底層...上面加一個(gè)SQL解釋層就是關(guān)系型數(shù)據(jù)庫了...
比如著名的HBase也是非關(guān)系型數(shù)據(jù)庫.Saleforce用著嫌麻煩.開發(fā)了一個(gè)Phoenix蓋在上面...HBase就成關(guān)系型數(shù)據(jù)庫了...