Database Reference
In-Depth Information
Geodatabase compression
Compressing is an Esri feature that helps reduce the size of a file geodatabase by finding
repetitive patterns in the database and grouping them together. This is a different concept
than compacting, which we will also address later. For example, if you have your
Food_and_Drinks
feature class with 10 features, and all of them have the
RATING
field set to
Good
, compressing the feature class will count the
Good
values and add the
number of occurrences as
Good(10)
. When this feature class is accessed, the data is un-
packed again and queried as desired. You might think that the processor needs to perform
some work before querying and therefore, this might slow down the performance.
However, with the advanced microprocessors and multithreading, this little extra work is
barely noticeable.
