Qlikview Interview Questions

Get Technical Answers for QlikView Interview Questions by QlikView Developers, Advanced Technical Questions for Freshers and Experience Persons. Get Free Practical Tests.

1. Define the QlikView tool?

Ans: QlikView is one of the top business intelligence tools which provide end-to-end platform services. The main operations included are data integration, user-driven business intelligence, and data analysis. The QlikView business tool helps users to convert the raw data into a useful one. This tool sometimes acts as a “Human brain” and mainly works on the business association. This software tool was found in 1993 in Lund, Sweden, and is now based in King of Prussia, Pennsylvania, United States.

2. Mention the important features of QlikView?

Ans: The following are the unique features of QlikView;

·  QlikView helps in data association which is maintained automatically.

·  The structure, data, and calculations of the QlikView report are held in RAM.

·  Data is compressed to 10% of the original size.

·  can perform visualization using colors.

3. How to create a QVD file in QlikView?

Ans: User can create the QVD file using the following syntax;

STORE INTO .

4. List the charts that can be used in QlikView Admin?

Ans: The following are important charts that can be used in QlikView Admin;

·        Line charts

·        Bar charts

·        Combo charts

·        Grid charts

·        Scatter charts.

5. What is the incremental load?

Ans: The incremental load is nothing but loading of new or changed records from the multiple data sources into the QlikView software tool.

6. What is a dashboard?

Ans: A dashboard is a type of QlikView document which shows many data matrices together and values can be stored in the sheet objects. These stored objects can change dynamically upon the selection of certain values in the datasheet objects.

7. Why do we need a master Calendar?

Ans: The master calendar in QlikView is required to know when we want to create additional data values which are not already existed in the original data source. These data objects’ later can be analyzed with the help of a master calendar.

8. What is a pivot table?

Ans: A pivot table can be defined as a table pf summary that allows the user to extract important information from a large data set.

9. How to set layers in QlikView?

Ans: Layers in QlikView are set on datasheet object properties in the dashboard layout tab. Where you can view them like an option like a top, bottom, and normal, a respective number ranging from 0, 1, and -1.

10. Explain Join and its types?

Ans: Join in QlikView gives the resulting record data which are accessed from one or more tables. These tables contain column which is concatenated only when we append the rows from one table to another.

The types of join are;

1. Left join

2. Right join

3. Inner join

4. Outer join

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11. What are the advantage and disadvantages of QlikView?

Ans: The following are the important advantages and disadvantages;

Advantages:

·        Data sharing is possible

·        Data interpretation and analysis

·        Self-service control tool

·        Low maintenance cost

·        High data security

·        Direct and indirect data search is possible

·        Cheaply available software tool

 Disadvantages:

·        Sometimes there will be a chance of getting inefficient real-time data analysis

·        Less RAM storage limit.

12. What is the purpose and uses of the QVD file?

Ans: The below are the few purpose and uses of the QVD file;

·    Helps to increase the load speed

·    Incremental load is also possible

·    Ease to maintain the file

·    Data consolidation is also possible

·    Separation of roles

·    Decreases the data load on servers.

13. What are QlikView server and publisher?

Ans: QlikView server helps to host the documents, user details, and objects whereas the QlikView publisher is a component of the QVS data file, which is responsible for performing data reduction, distribution, accessing, and managing the data contents. The important thing is that users should get a separate license for publishers.

14. What are the main functions of different tabs on the QlikView management console?

Ans: There are three tabs available on the QlikView management console such as;

  •       Status:  Status shows the list of operations that are already executed in the data servers.
  •       Documents: This document contains sub-tabs such as source and user documents. The source sub-tab contains dashboard detail which is created by developers whereas the user document tab contains published dashboard information.
  •       Users: this user tab contains details like the QlikView server environment, several services performed by the user, configuration users, and license system which is accessed by clients.

15. What are CAL and its type in QlikView?

Ans: CAL is a Client s Access License which should be connected to the QlikView server. The types of CAL are as follows;

  1. Named user CAL: this is nothing but a user-specific or machine-specific license.
  2. Usage CAL: this allows users to initiate any session.
  3. Session CAL: this allows different multiple users to access different documents and control the sessions.
  4. Document CAL: this permits users to access a specific document.

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16. What are the different services of the QlikView server environment?

Ans: The below are important services of the QlikView server environment such as;

  •       QVS (QlikView server)
  •       QMS (QlikView management system)
  •       QDS (QlikView distribution services)
  •       DSC (Directory service connector)

17. Explain the three tiers of QlikView applications?

Ans: The major three tiers of QlikView applications are;

  •       Tier i: Here Raw data should be loaded first, and then the QVD data file is created.
  •       Tier ii: QVD data file is used to transform into a business login, need, and data models are created.
  •       Tier iii: This helps to read all QVD data files, which contains Tier ii, and QVW is made.

18. What are the different types of data loads in QlikView?

Ans: There are seven different types of data loads available in QlikView;

  1. Load from files
  2. Resident Load
  3. Incremental load
  4. Add load
  5. Inline load
  6. Binary load
  7. Buffer load

19. Explain Kurtosis () and Skew () functions?

Ans: Kurtosis () is a type of statistical aggregate function which measures the peak of the curve.

Skew () is a type of statistical aggregate function that measures the symmetry in a distribution curve.

20. Mention the two types of match () function in QlikView?

Ans: The two types of match () function in QlikView are Match () and WildMatch ().

21. What is the difference between the multi-box and list box?

Ans: A multi-box is a type of compressed table that shows the multiple table data fields.

A list box is also a type of compressed table that shows all the data values of any single table fields which stores in the form of lists.

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22. List the Components of QlikView architecture?

Ans: The QlikView architecture comprises of five main building blocks such as;

  •       QlikView server
  •       QlikView publisher
  •       QlikView Desktop
  •       QlikView management console
  •       QlikView user Access.

23. Mention the different components of the dashboard?

Ans: The various components of the dashboard are;

  •       Input Boxes
  •       Texts or list box objects
  •       Selection boxes
  •       Charts
  •       Notes and comments.

24. Define Concatenation?

Ans: Concatenation in QlikView is defined as a sequence of interconnected things.  Here any rows and columns data are related to each other can be connected with the help of the Concatenation method.

25. What is the difference between the QlikView server and QlikView publisher?

Ans: 

QlikView server QlikView publisher
QlikView server is an application which is created in the desktop versions QlikView is an optional mobile application
This is hosted on the QlikView server This QlikView is a server-side component
This can be accessed by users anywhere This is the final document management method

26. What are the uses of macros in the application?

Ans: The macros in QlikView are generally used for the following purpose such as;

  1. in the creation of objects.
  2. Helps the user to reload the applications.

27. Mention the popular ways to triggered QlikView alerts?

Ans: There are three popular ways to trigger QlikView alerts such as;

  •       Automatically trigger method
  •       Manually trigger method and
  •       External programs to trigger QlikView alerts.

28. What is the subset ratio?

Ans: The subset ratio in QlikView is a type of ratio calculated between the total numbers of distinct values that can be found in the table. Then compared to distinct values in the field whose subset ratio is needed.

29. What is the use of binary statements in QlikView?

Ans: The binary statement in QlikView is used to load the data parts of QlikView’s important document.

30. What is the main difference between QlikView and Qlik Sense?

Ans: The major differences between QlikView and Qlik Scene are as follows;

QlikView Qlik sense
QlikView is a kind of hidden script Qlik Sense can be used anywhere in the code
ETL and OLAP tools can be supported ETL and OLAP tools cannot be supported
This tool supports SaaS/multi-cloud platform This does not support the SaaS/ multi-cloud platform
Data mining and analytical methods are not possible Data mining and data analysis methods are possible

Insight:

I hope this article may help a few of you to understand the complex concepts of QlikView and also helps you to crack the interview with any top companies. QlikView is one of the popular business intelligence tools and helps to perform data analysis tasks. So in this article, I have tried my best to explain each concept in an understanding manner and may help those of you who want to pursue their profession as QlikView experts.

 

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Mudassir
Mudassir
DevOps ERP and IAM tools
Mudaasir is a programming developer for hkr trainings. He has a well knowledge of today’s technology and I’ve loved technology my entire life. And also been lucky enough to work for the programmer including science and technology. Big thanks to everyone who has followed me on LinkedIn and twitter.

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