If you're looking for QlikView Interview Questions and Answers for Experienced & Freshers, you are at the right place. There are a lot of opportunities from many reputed companies in the world. According to research, QlikView has a market share of about 7.3%. So, You still have opportunities to move ahead in your career in QlikView. Mindmajix offers advanced QlikView Interview Questions 2021 that help you in cracking your interview & acquire your dream career as QlikView Developer.
|Types of QlikView Interview Questions|
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Gauge chart and list box are the objects having only expression and no dimension.
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Joins are used to merge data from different data sets into one. There are many types of joins-
Join merges two tables to create one table whereas Keep implements Join logic on two tables but maintains them separately.
Fact Constellation Schema is a collection of multiple facts tables sharing common dimension tables. It is made up of several star schemas and hence also called galaxy schema.
QlikView features are as follows
By using ODBC, OLEDB, or SAP connectors as a data connection, we can load data using the Select statement.
By using the Comparative Analysis option, users can quickly gain new insights to analyze their information in Qlikview.
QVD files can be read in two modes- the standard and the optimized model. The optimized load is a faster process and is preferable for large sets of data.
Qlikview Incremental load is used for loading new or changed records from the database, whereas resident load is a part of loading data which already present in the Qlikview application.
Delimited files are text files in which data fields and data values are separated by commas, semicolons, and tabs, and that is why they are also called Comma Separated Values files. These files are saved with .csv extension.
Yes, it is possible to load web files into QlikView. It is done through the Script Editor.
Inline data is created on the spot and to load inline data in QlikView we need to open the Script Editor and then select the Insert option. After that, select Load Statement followed by Load from Inline.
A Sheet divides a QlikView document into multiple sections. Every document will have at least one sheet in it, if needed, we can add more from the Sheet Properties option.
Script Editor can be invoked in two ways- either by the shortcut keys Ctrl+E or by the icon for Edit Script.
A dashboard is a QlikView document that displays values from many fields simultaneously and makes the analysis process easier.
A buffer load is used to create a file using a buffer prefix in Qlikview's memory for future use.
The following are the types of charts are used in QlikView
The synthetic key is created to avoid confusion when two rows of the table are the same. In QlikView, automatically, this scenario is detected, and a synthetic key is created to make the process faster.
The auto-Generated function automatically generates the numbers between the given range.
A total of three fields are required to create a cross table, and they are as follows:
The main difference between the entity-relationship model and dimensional model is-
In the ER model, a table can have foreign keys in multiple tables that lead to circular references. In a dimensional model, a fact table contains all necessary measures surrounded by dimensional tables.
In QlikView, tables get automatically connected to each other based on some key references. This process leads to the formation of unwanted structures called circular references. It is a condition when there exist two or more association paths among three or more tables. This condition can be corrected in the following ways-
Cyclic groups contain a set of dimensions that can be switched among users, whereas Drill down Groups contain a hierarchical list of dimensions used by users to drill down to access detailed levels of the data.
Authorization is nothing but permitting the users to access the resources. In QlikView, authorizations are implemented at multiple levels such as-
Interval match is one of the functions that are useful for the tables containing numeric values because it is used to match a numeric value from one table to another table.
New features of QV are as follows-
QV Server is a program installed in a physical server with a number of CAL’s to authorize users to access QV files on the server. QV Publisher is a program that gives centralized control of all QV files and how to schedule them.
In QlikView Set Analysis, a P() function is used to return all possible values while an E() function is used for returning a set of all excluded values.
The Match() function checks whether the value of a string on expression is matching with the data value present in a column. The Pick() function is used to return the nth expression along with the string in the list.
RDBMS stands for Relational Database Management System, and it stores data into rows and columns of tables, and data is retrieved through SQL queries. An associative database model is comprised of two tables: one for items and one for links.
Table Viewer is the tool provided by QV that is used to get a snapshot of tables.
Type of data connections are used in QlikView
We can use macros for the following things-
It is used for slowly changing dimensions.
It is used to generate data buckets of different sizes.
Tasks are generated to reload data, whereas triggers are created to schedule and run tasks at a certain time.
QlikView Server hosts documents, users, and objects whereas QlikView Publisher is a component of QVS that is responsible for data reduction and distribution, accessing, and managing content. Users need to get a separate license for Publisher.
There are three tabs present on the QMC - Status, Documents, and Users. There are used for-
CAL stands for Clients Access License which is a must to connect to the QlikView Server. There are different types of CAL present QlikView, and they are as follows-
The following are the databases:
We generally use a
Information density is defined as the ratio of null values to the total number of records present in the tables whereas the subset ratio is the ratio of a number of distinct values of a field in a table to the distinct values of the same field in all tables.
Document-level auditing helps administrators to effectively audit the user interactions and improve risk management and compliance.
These were some of the most important interview questions on QlikView for both freshers as well as experienced candidates. I hope this article has helped you in preparing for your interview.
If you have any doubts or queries, do not forget to drop the question in the comment box below.
Pooja Mishra is an enthusiastic content writer working at Mindmajix.com. She writes articles on the trending IT-related topics, including Big Data, Business Intelligence, Cloud computing, AI & Machine learning, and so on. Her way of writing is easy to understand and informative at the same time. You can reach her on LinkedIn & Twitter.