As a leading Business Discovery Platform, QlikView is built with a very different approach to data discovery than other traditional platforms. QlikView does not first build a query and then fetch the result based on the query. Rather, it forms associations between different data objects as soon as it is loaded and prompts the user to explore the data in any way. There are no predefined data drill-down paths. The data drill-down paths can happen in any direction as long as the data is available and associated.
Of course, a user can also play a role in creating the associations between data elements using the data modeling approach available in QlikView.
Architectural Overview
QlikView’s architecture consists of a front end to visualize the processed data and a back end to provide the security and publication mechanism for QlikView user documents. The diagram given below depicts the internal working of QlikView. The architecture is discussed in detail below the picture.
Front End
The Front end in QlikView is a browser-based access point for viewing the QlikView documents. It contains theĀ QlikView Server, which is mainly used by Business users to access the already created BI reports through an internet or intranet URL.
Business users explore and interact with data using this front end and derive conclusions about the data. They also collaborate with other users on a given set of reports by sharing insights and exploring data together, in real-time or off-line. These user documents are in the format .qvw, which can also be stored in the Windows OS as a standalone document
The QlikView server in the front end manages the client-server communication between the user and QlikView backend system.
Back End
The QlikView backend consists of QlikView desktop and QlikView publisher.
TheĀ QlikView desktopĀ is a wizard-driven Windows environment, which has the features to load and transform data from its source. Its drag and drop feature is used to create the GUI layout of the reports that becomes visible in the frontend. The file types, which are created by the QlikView desktop are stored with an extension ofĀ .qvw.Ā These are the files that are passed on to the QlikView server in the front end, which serves the users with these files. AlsoĀ .qvwĀ files can be modified to store the data-only files, which are known asĀ .qvdĀ files. They are binary files, which contain only the data and not the GUI components.
TheĀ QlikView PublisherĀ is used as a distribution service to distribute the .qvw documents among various QlikView servers and users. It handles the authorization and access privileges. It also does the direct loading of data from data sources by using the connection strings defined in theĀ .qvwĀ files.
