Filtering
Filtering is the technique of filtering information from users who do not have access to it. It is different from masking in the way that it filters out the complete column or complete row instead of showing random values or a masked value. There are two types of filtering, as they are described in the following sections.
Row-level filtering
As shown in the following diagram, Row-Level Filtering refers to hiding certain rows from users who do not have access to them:
![](https://static.packt-cdn.com/products/9781788620444/graphics/e1ebbe2f-cffd-45af-8b92-63641058d7f8.png)
Column-level filtering
As shown in the following diagram, column-level filtering refers to hiding entire columns from users who do not have access to them:
![](https://static.packt-cdn.com/products/9781788620444/graphics/15d12832-a17b-4621-aa3f-69a7baddbb30.png)