Thursday, 30 April 2015
Tableau Server Components
The work of Tableau Server is handled with the following
four server processes:
Application Server: Application
Server processes handle browsing and permissions for the Tableau Server web and
mobile interfaces.
VIZQL Server: Once a
view is opened, the client sends a request to the ViZQL process.The ViZQL process then sends queries
directly to the data source, returning a result set that is rendered as images
and presented to the user. Each ViZQL Server has its own cache that can be
shared across multiple users.
Data Server: The Tableau Data Server lets you centrally
manage and store Tableau data sources. It also maintains metadata from Tableau
Desktop, such as calculations, definitions, and groups. The published data
source can be based on: • A Tableau Data
Engine extract • A live connection to a
relational database (cubes are not supported)
Backgrounder: The backgrounder refreshes scheduled
extracts and manages other background tasks.
Data Connectors: Tableau
includes a number of optimized data connectors for databases such as Microsoft
Excel, SQL Server, Oracle, Teradata ,Vertica , Cloudera Hadoop and many more.
There is also a generic ODBC connector for any systems
without a native connector.
Tableau provides two modes for interacting with data:
Clients:
Web Browsers and Mobile Apps
Tableau Server provides interactive dashboards to users via
zero-footprint HTML and JavaScript (AJAX) in a web browser, or natively via a
mobile app. No plug-ins or helper applications are required. Tableau Server
supports:
Web browsers:
Internet Explorer, Firefox, Chrome and Safari
Mobile Safari: Touch-optimized views are automatically
served on mobile Safari
iPad app: Native iPad application that provides
touch-optimized views and content browsing
Android app: Native Android application that provides
touch-optimized views and content browsing
Android browser: Touch-optimized views are automatically
offered in the Android browse
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