October 2015
Intermediate to advanced
368 pages
8h 49m
English
Content preview from Mastering Google App Engine
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How is data stored?
Now that we know about row keys, column families and columns, we will gradually move towards examining this data model in more detail and understand how the data is actually stored. We will examine the logical storage and then dive into the actual structure, as it ends up on the disk.
The data that we presented in the earlier table had no order and was listed as it came to my mind. However, while storing, the data is always sorted by the row key. So now, the data will actually be stored like this:
|
Personal |
professional | |||
|---|---|---|---|---|
|
|
|
|
|
|
|
Kim |
Yong |
32 |
Sony |
Director |
|
Mohsin |
Hijazee |
29 |
Sony |
Senior Designer |
|
Paul |
Jefferson |
39 |
LG |
Sales ... |
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