Exposing all Tableau information to all users isn’t a great idea. For privacy and confidentiality, organizations should only expose the information that a particular user should see. That’s why it’s important to restrict how data is accessed in Tableau workbooks. Tableau Row Level Security is the solution. It helps Tableau users to restrict how data is accessed in Tableau workbooks. In this article, you will be discussing Tableau Row Level Security in detail.
Table of Contents
To implement the Tableau Row Level Security you need to meet the following requirements:
- Basic understanding of Tableau.
- Tableau Server.
What is Tableau?
Tableau is a popular Data Visualization and Business Intelligence tool among businesses and individuals. It helps its users to visualize their data to make it easy to understand for all people. Tableau users can create different types of visualizations and combine them into dashboards. These dashboards can then be accessed by different users from various geographic locations.
Key Features of Tableau
Let’s explore some of the amazing features offered by Tableau:
- Users can deploy interactive models and dashboards with Tableau.
- Tableau supports different data sources for connecting & importing data from a wide range of external sources.
- Tableau users can collaborate with their teams easily for collaborative work or review.
- Users can also share the dashboard to the cloud, making it available from anywhere.
- Tableau offers 200+ connectors to allow users to securely connect to other data sources.
What is Tableau Row Level Security?
Tableau Row Level Security involves restricting data in Tableau workbooks to certain users. Note that it’s different from Tableau permissions which grant or deny access to content. With permissions, you can only control who can view or edit a workbook. Row-level Security allows users with similar permissions to access different data. For example, one user may see data from America while another user may see data from Asia.
By default, Tableau users with access to a workbook can see all the data in a view. When you apply Tableau Row Level Security, you will be able to specify the rows that each person can view once signed into the server. It applies to both data sources with live connections and extracts sources with tables stored as multiple tables.
Next, you will be discussing how to implement this Tableau Row Level Security feature in Tableau.
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How to Implement Tableau Row Level Security?
Tableau provides different ways to implement row-level security. Let’s discuss them:
1) User Filter with Manual Mapping
Suppose you have the following data showing the percentage of fully vaccinated individuals in different countries.
You want each country manager to access only their respective country, but not the vaccination percentage of other countries. You can create a user filter and map every user manually with the countries they should view. To create the user filter, follow these steps:
Step 1: Click the Menu Bar and choose “Server”.
Step 2: Choose “Create User Filter”. You will be presented with the list of available fields where you can create the user filter form. If you haven’t signed into your Tableau Online or Server account, you may be prompted to do so.
Step 3: Assign each user to the appropriate region.
This is a good approach to implementing Tableau Row Level Security if there is only a small number of users. However, if there are many users, you will spend too much time doing the mapping. Again, if a new user joins Tableau, you will have to edit the workbook to add the mapping.
2) Dynamic Filter using a Security Field
This approach to Tableau Row Level Security involves joining a data source and a security table. The security table contains the list of usernames and the countries they should access.
A join should then be created between the data and the users’ table.
The dynamic filter should be added by creating a calculated field. You should use the following formula:
The USERNAME() represents the name of the user signed into Tableau. You should then add the security filter and allow TRUE results only.
This approach to Tableau Row Level Security is appropriate when you are sure that users and groups will be added since there is no need for manual mapping. However, it has a terrible performance compared to the user filter because you must join the security table to the original data source.
3) Security Groups
You can also use Security Groups to implement Tableau Row Level Security. Tableau allows you to create groups and add users to them. The idea of this approach is to create one group for each country then map the groups to their respective countries.
You can create groups from the Groups tab of Tableau Server.
Open the Users tab and add users to the group. Once you’ve created the groups and users for all countries, you should create a user filter within the workbook. Just follow the steps given below:
Step 1: Click the Server tab.
Step 2: Choose “Create User Filter”.
Step 3: Select the dimension to be mapped to every group. In my case, the dimension will be “Country”.
Step 4: Move the filter to the Filters shelf.
In the previous example, mapping was done between users and countries. In this case, it will be between groups and countries. This should be done for every group that you have created.
You will have created a set of users who you can copy into other workbooks that have the Country dimension and avoid repeating the mapping process.
Although the Security Group approach is similar to the User Filter approach, it is very important if you will have to add new users. Instead of editing all workbooks where you have applied Tableau Row Level Security, you only have to add the users to the groups. Since the group is already mapped to one country, the mapping will be done automatically without the need to edit the workbooks.
These are the best approaches to implementing Tableau Row Level Security.
You’ve learned, that Tableau is a data visualization tool. Users can create dashboards from their data. Tableau Row Level Security is a way of restricting how data in Tableau workbooks is accessed. It allows users with similar permissions to access different data.
The popular approaches to implementing row-level security in Tableau include using a User Filter, Dynamic Filter, and a Security Group.
- The User Filter approach involves mapping each user to the row they should access, for example, a particular country.
- The Dynamic Filter approach involves joining a data source and a security table with the list of usernames and rows that they should access.
- The Security Group approach involves creating groups of users and mapping the groups to the rows they should access.
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Do you have any doubts? Feel free to ask or share your experience with Tableau Row Level Security in the comments section below!