Posted by Dylan Wan on September 24, 2017
I saw “create external table ” first in Oracle DBMS 11G.
It was created for the purpose of loading data.
When Hive was introduced, a lot of data were already created in HDFS.
Hive was introduced to provided the SQL interface on these data.
Using the external table concept is a nature of the design. It is not really a creative thing.
Posted in Big Data, Data Lake, Data Science, Oracle | Tagged: Data Mining, Data Warehouse | Leave a Comment »
Posted by Dylan Wan on April 7, 2017
This is an old topic but I learned more and come up more perspectives over time.
Posted in BI, Big Data, Business Intelligence, Data Lake, Data Warehouse, EDW, Enrichment, Master Data Management | Tagged: Data Lake, Data Warehouse | Leave a Comment »
Dylan's BI Study Notes 