Tableau enables business users to perform extensive analysis independently of IT without requiring in-depth technical knowledge. The user-friendly interface and easy-to-use features empower users to intuitively derive insights from data and support data-driven decision-making at all levels of the organization. Tableau's various components cover everything from data cleansing to browser-based and mobile analysis. Thanks to numerous native connectors, Tableau allows users to connect to a large amount of different data sources.
In addition to its versatile features for data analysis and visualization, Tableau Desktop has its own functionalities for data preparation. If more complex operations are required, Tableau Prep Builder is a complementary application that offers more extensive options for preparing data for further analysis. In Tableau Prep Builder, all changes to the data are summarized in a workflow and can be tracked using a flowchart. When the workflow is executed, all steps are applied to the entire data set and the result can be saved as an extract or written back to a database.
By interacting with data in a dynamic dashboard users can develop a better understanding of the data and are able to get quicker insights. Using Tableau, you can add interactive elements to your dashboards in order to encourage users to explore the data in detail and ask questions. For example, you can use actions to filter or highlight data by simply selecting data points. You can also change parameter values via interaction to use them in dynamic calculations. Actions can be triggered either by selecting data points within a chart or table, via their context menu, or by simply hovering over a selection with the mouse.
Besides its versatile data analysis and visualization tools, Tableau Desktop has several features for cleansing and combining data. Data can be intuitively prepared for further analysis using drag and drop without requiring any special technical knowledge. The resulting data source can be published to Tableau Server or Tableau Online to make the prepared data available to other users for their own analyses.
Data cleansing functions
In some cases, Tableau Desktop's functions are not enough to get the data into the desired form. When more extensive cleanup steps are needed to begin analysis, Tableau Prep Builder offers additional features to help you prepare your data. However, the workflow created in Tableau Prep Builder cannot be applied to a live connection and only outputs extracts. To keep the extract up-to-date after publishing via Tableau Server or Tableau Online, the workflow can be run on a schedule if you have licensed the optional Data Management add-on.
In addition to making simple adjustments to published dashboards, users with the proper permissions can also create entirely new reports in the browser. This can be done by accessing published data sources or by setting up a new connection to data in Tableau Server or Tableau Online. Both platforms support most of the functionality available in Tableau Prep Builder or Desktop for preparing data. However, at this time, not all connectors provided in the desktop applications are available. If the required connector is not available, the data source must be published beforehand via Tableau Desktop/ Prep Builder.
With Ask Data and Explain Data, Tableau Server and Tableau Online provide two AI-powered features to help users find relevant information and to explain possible causes for individual data points or trends. Ask Data allows you to query the desired information directly from the data source using natural language. When doing so, Ask Data recognizes the context and creates a proper visualization based on known best practices. Visualizations created using Ask Data can then be adjusted as desired and published as a workbook. Explain Data, on the other hand, examines potential causes based on statistical models and presents the most likely ones to the user in the form of visualizations and explanations.
Publishing data sources provides a common data foundation and ensures higher reliability and data consistency by avoiding the proliferation of data sources. Whether reporting is ultimately done in the browser or using the desktop application, Tableau Server and Tableau Online enable collaboration through a centralized repository providing greater consistency across Tableau reports.
Guide your staff in finding proper data sources
The amount of data is growing rapidly and is constantly subject to change. Tableau provides many tools to help users find the right data at the right time in this complex environment. You can facilitate data analyses for your staff by providing them with template workbooks with existing data connections and formatting. Administrators and project managers can also mark trusted data as such and certify published data sources. Certified data sources are more likely to show up in search results and increase trust in the data. We therefore recommend that you make use of this feature and set specific guidelines for certifying data sources.
Licensed separately, the Data Management Add-on provides additional functionality for managing content and data assets in the Tableau Server and Tableau Online environment. The Add-on includes two components, Tableau Catalog and Tableau Prep Conductor. Tableau Catalog indexes all content such as workbooks, data sources and workflows in Tableau Online or Tableau Server and provides greater transparency for the entire data stream. With Tableau Prep Conductor, workflows created in Prep Builder and within the web environment can be executed automatically, allowing you to keep your data up to date without having to run the workflows manually.
In Tableau Server and Tableau Online, all content such as workbooks and data sources are grouped into sites. Each site has its own set of users and is completely isolated from the content of other sites. The content of each site is in turn organized into projects, which serve as containers and simplify the management of subordinate content. Unlike Tableau Server, a Tableau Online environment consists of a single site with a single user set. To use Tableau Online with multiple sites, multiple accounts are required.
Tableau can be seamlessly integrated into the existing enterprise architecture
With a few exceptions, Tableau Server and Tableau Online do not differ in their functionalities, but primarily in the way they are deployed. Depending on your existing data architecture, you can deploy Tableau Server either locally or on a public cloud as part of an Infrastructure-as-a-Service solution. Tableau Server can be scaled up to thousands of users by adding additional server capacity and increasing the respective Tableau Server processes. If you choose Tableau Server, the maintenance of the software and, depending on where it is installed, the hardware, is entirely up to you.
If you don't want to worry about maintaining the server infrastructure or configuring and updating the software, Tableau also offers a Software-as-a-Service solution. Tableau Online is a Tableau-hosted version of Tableau Server.
Tableau Server allows you to choose between a role-based and a core-based licensing model. In the role-based licensing model, each individual user must be licensed and assigned a role. The different licences are hierarchical, with different price levels and levels of functionality. This ranges from users who only view pre-built dashboards to users who create and maintain their own dashboards and data sources or even take on an administrative role in managing Tableau Server or online deployment. Whether a user can use Tableau Desktop and Tableau Prep Builder also depends on the licence.
The core-based licence is only available for Tableau Server and determines the number of computer cores Tableau Server can be run on. As long as the licensed number of computer cores is not exceeded, an unlimited number of viewer and explorer roles can be issued to users while creator licences need to be purchased separately. However, for a given number of computer cores, increasing the number of users will eventually lead to performance issues. The core-based licence allows guest access so it’s not necessary for users to have an account in order to access shared dashboards.
By default, if the proper permissions are in place and a user can open a workbook, that user can see all the data in the various views. Row level security can be used to restrict the data that a particular user can see in the workbook. This allows different users to see different data in the same dashboard without having to create a separate dashboard for each group of users. In Tableau, you implement row-level security with user filters or a dynamic filter that matches mappings from users to field elements against a reference table and filters the data accordingly. With the new 2021.4 release, row-level security can be defined and managed centrally for individual tables. Any changes are applied to all data sources, workflows and workbooks that are based on this data