Alt Desc for Flash Cache extends in-memory DB

The image is an illustration of how In-Memory columnar scans work on an Exadata Database Machine with Flash Cache

On the left side of the image is an Exadata Database Machine rack. In the top part of the rack, where the database servers are located, is a callout for the In-Memory Columnar scans. This callout shows 4 table columns, with an arrow pointing downward through the 3rd column. This callout points to the top half of the middle of the illustration, where a Database Server is represented, with the SGA indicated. The arrow from the callout points to the IM Column Store section within the SGA. The text next to this database server image says "Up to 1.5 TB DRAM".

On the left side the image, there is also a callout for the lower part of the Exadata Database Machine rack, where the storage servers are located. This callout is for the In-Flash Columnar scans. This callout shows 4 table columns, with an arrow pointing downward through the 3rd column. This callout points to the bottom half of the middle of the illustration, where a large section labeled "In-Flash Columnar Data (10's of Terabytes per Server)" is located. Underneath this section are the multiple storage servers, with arrows pointing upwards into the In-Flash Columnar Data section, indicating that each server contributes to the Flash Cache storage.

In the middle of the illustration, between the database server on top and the In-Flash Columnar data section, there is a shaded area which starts with the small IM Column Store section of the database server and expands outward to encompass the In-Flash columnar store section. The text within this shaded area reads "Extends In-Memory Column Store into Flash".