QVD, QVW and QVX

[#1]

Hi I am new to here and this is my first topic that I made.

I am confused with the QV file extension, some of them are in QVD format, while others in QVW format, and some other else are in QVX format.

Can anyone explain what are they and what do they stands for?

I know the QVDs are ususally for saving data from the external source, and the QVWs are the place of design the user interface and programming, and I have no idea with QVX.

Do the QVD stands for qlikview documents? while the QVW stands for qlikview workplace/ workbook?

Thanks in advance

[advait_thakur · Accepted solution]

Hi Kobee,

   QVW: Stands for Qlikview Worksheet (The application file which holds your reports/dashboard/script/data model and connection strings)

   QVD : Stands for Qlikview Data (One of the optimize layer of data which has been fetched from the database, qvd is a patent technology of qliktech and qlikview applications reads data 100 time faster as compared to any other sources because data get stores in optimized format. Only Qlikvew application can read the data from QVD. Its always better to fetch the data from from database first and then load the data into your application)

   QVX: Stands for Qlikview Data Exchange (If you wish to make your own connector that could create a connectivity to Qlikview files, One of the efficient and optimize way to fetch data from the database. Mainly used if you are not using ODBC/OLEDB)

Thank You

Advait

[sushil353]

Hi,

QVW: is called Qlikview Working file: it contains data as well as the UI.

QVD: Qvd is Qlikview Data file. it contains qlikview readable data. data extraction from qvd is very fast as compare to other sources that is why we try to save our data in qvd format

QVX: called qlikview extension file which is used for 3rd party integration. it contains data which can be used by the 3rd part tools.

Please refer to qlikview reference manual for more clarification and understanding

HTh

Sushil

[Siva_Sankar]

QVX: A QVX formatted file contains metadata describing a table of data and the actual data. In contrast to the QVD format, which is proprietary and optimized for mininum transformations inside QlikView, the QVX format is public and requires a few transformations when exporting data from traditional data base formats. QVX files are loaded in the script with the load statement. This file type has no configurable settings. QVD: A QVD (QlikView Data) file is a file containing a table of data exported from QlikView.

QVD is a native QlikView format and can only be written to and read by QlikView. The file format is optimized for speed when reading data from a QlikView script but it is still very compact. Reading data from a QVD file is typically 10-100 times faster than reading from other data sources. QVD files can be read in two modes: standard (fast) and optimized (faster). The selected mode is determined automatically by the QlikView script engine. Optimized mode can be utilized only when all loaded fields are read without any transformations (formulas acting upon the fields), though the renaming of fields is allowed. A WHERE clause causing QlikView to unpack the records will also disable the optimized load. A QVD file holds exactly one data table and consists of three parts: A well formed XML header (in UTF-8 char set) describing the fields in the table, the layout of the subsequent information and some other meta-data. Symbol tables in a byte stuffed format. Actual table data in a bit-stuffed format.

QVW: QVW is the qlikview file which you create in Qlikview desktop and which holds the qlikview objects. All your development is done here.

Advantages: QVX has a well documented internal structure, optimized for streaming data from a database. So if you want to develop a connector of your own, or a piece of software that creates input files for QlikView, you should probably choose QVX. QVD loads faster, but has an internal format which is more complex and has not been published. If you always create your data files using QlikView, you should probably choose QVD.

Regards.

Siva Sankar

[jagan]

Hi,

QVD - A qvd file is a qlikview data file which holds data like CSV, Excel etc.

QVX - http://community.qlik.com/servlet/JiveServlet/previewBody/2677-102-1-2852/QlikView%20QVX%20File%20Fo...

QVW - A qvw file which has data (from QVX, QVD, QVW, Database, xml etc), charts, tabs, script, macros etc.

Hope this helps you.

Regards,

Jagan.

[Anonymous]

First of all Welcome to QlikView World.

Major extension in QlikView:

QVW: QlikView Workbook ( here is the place where we do all reporting/dashboard development etc.)

QVD: QlikView Data ( It's a QlikView native data format file, which is 10-100 times faster than other. Indeed it so qick. Things to care about..only "QlikView can read or wirte the QVD")

QVX: (Full for Not know..Sorry for this )The QVX is in an open format file for storage of QlikView data. A customer or third party can create QVX files on any platform, without needing Qlikview software.

Note: QVD files will typically load faster than a QVX file.

Best Regards,

Skumar

[Anonymous]

First of all Welcome to QlikView World.

Major extension in QlikView:

QVW: QlikView Workbook ( here is the place where we do all reporting/dashboard development etc.)

QVD: QlikView Data ( It's a QlikView native data format file, which is 10-100 times faster than other. Indeed it so qick. Things to care about..only "QlikView can read or wirte the QVD")

QVX: (Full for Not know..Sorry for this )The QVX is in an open format file for storage of QlikView data. A customer or third party can create QVX files on any platform, without needing Qlikview software.

Note: QVD files will typically load faster than a QVX file.

Best Regards,

Skumar

[narender123]

Hi Kobee,

QVD-Qlikview data file for optimizing load

QVW-Qlikview Work file working as a qlikview generator (for generating QVD)as well as Qlikview dash board(for developing reports).

If you got it let me know .

[#9]

The QVW file stores the data model and contains data.  It includes the load script, the variables and chart objects with their dimensions / expressions / settings.

QVD and QVX are Data Files :

- QVD files can be read and produced only by QlikView.

- QVX files can be read and produced by QlikView and by external sources.

For more information on QVXs, look a this topic : http://community.qlik.com/message/92107#92107

Marie-Sophie

[#10]

QVD: Database file ; saves an uncompressed "RAM image" representation of a QlikView table as it was stored in memory when open in QlikView; allows the database to be opened and loaded into memory quickly.

When a QVD file is open, QlikView houses the database in memory instead of on disk, which allows for fast data queries and computation. Therefore, QVD files are loaded directly into memory when opened in the software.

QVW: Document created by QlikView, BI analysis application; stores a QlikView application, which contains reports, charts, and KPI ; used for analyzing data.

QVX: QlikView data exchange is a new file/stream format for high performance data input into QlikView. A QVX formatted file contains metadata describing a table of data and the actual data. In contrast to the QVD format, which is proprietary and optimized for minimum transformations inside QlikView, the QVX format is public and requires a few transformations when exporting data from

traditional data base formats.