Difference between data warehouse and data lake

The major difference is data warehouse only store  the data which were  precessing.  The data lake is store all data.   In recent mindset change of data store is all data are valuable.  Don’t need to extractor  the data before stored them.  Data lake can help to deal with

1) non structural data

2) data storage cost...

3) don’t need schema.  The schema only adopt when read them.

 

Forbe identifier 4 mature level in his article  of The data lake Dream

1) No hadoop

2)with hadoop

3)all data parking in hadoop

4)Enhance data security and data governance