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 unpacked 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.
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Hussein Nasser is an Esri award-winning senior GIS solution architect working in the GIS field since 2006. He is the author of three books in the ArcGIS technology: Administering ArcGIS for Server, Learning ArcGIS Geodatabases, and Building Web Applications with ArcGIS, all by Packt Publishing. In 2007, he won the first place at the annual ArcGIS Server Code Challenge, conducted at the Esri Developer Summit in Palm Springs, California. In 2014, he started the IGeometry YouTube channel, where he periodically publishes educational GIS videos.
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Hussein Nasser is an Esri award-winning senior GIS solution architect working in the GIS field since 2006. He is the author of three books in the ArcGIS technology: Administering ArcGIS for Server, Learning ArcGIS Geodatabases, and Building Web Applications with ArcGIS, all by Packt Publishing. In 2007, he won the first place at the annual ArcGIS Server Code Challenge, conducted at the Esri Developer Summit in Palm Springs, California. In 2014, he started the IGeometry YouTube channel, where he periodically publishes educational GIS videos.
Read more about Hussein Nasser