📜  ROLAP 和 MOLAP 的区别

📅  最后修改于: 2021-09-09 11:56:50             🧑  作者: Mango

关系在线分析处理 (ROLAP):
ROLAP 用于大数据量,其中数据存储在关系表中。在 ROLAP 中,创建了数据的静态多维视图。

多维在线分析处理 (MOLAP):
MOLAP 用于有限的数据量,其中数据存储在多维数组中。在 MOLAP 中,创建了数据的动态多维视图。

ROLAP 和 MOLAP 的主要区别在于,在 ROLAP 中,数据是从数据仓库中获取的。另一方面,在 MOLAP 中,数据是从 MDDB 数据库中获取的。这两者之间的通用术语是OLAP

我们来看看 ROLAP 和 MOLAP 的区别:

S.NO ROLAP MOLAP
1. ROLAP stands for Relational Online Analytical Processing. While MOLAP stands for Multidimensional Online Analytical Processing.
2. ROLAP is used for large data volumes. While it is used for limited data volumes.
3. The access of ROLAP is slow. While the access of MOLAP is fast.
4. In ROLAP, Data is stored in relation tables. While in MOLAP, Data is stored in multidimensional array.
5. In ROLAP, Data is fetched from data-warehouse. While in MOLAP, Data is fetched from MDDBs database.
6. In ROLAP, Complicated sql queries are used. While in MOLAP, Sparse matrix is used.
7. In ROLAP, Static multidimensional view of data is created. While in MOLAP, Dynamic multidimensional view of data is created.