Qlikview Interview Questions and Answers, Qlikview Interview Questions and Answers Freshers, Qlikview Interview Questions and Answers, Qlikview Interview Questions
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Over thousands of vacancies available for the Qlikview developers, experts must be acquaintance with all the component of Qlikview technologies. This is necessary for the students in order to have in-depth knowledge of the subject so that they can have best employment opportunities in the future. Knowing every little detail about Qlikview is the best approach to solve the problems linked with problem.
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First of all, let us tell you about how the Qlikview technology is evolving in today’s world and how demanding it is in the upcoming years. In fact, according to one study, most of the companies and businesses have moved to the Qlikview. Now, you cannot predict how huge the future is going to be for the people experienced in the related technologies.
Hence, if you are looking for boosting up your profile and securing your future, Qlikview will help you in reaching the zenith of your career. Apart from this, you would also have a lot of opportunities as a fresher.
These questions alone are omnipotent. Read and re-read the questions and their solutions to get accustomed to what you will be asked in the interview. These Qlikview interview questions and answers will also help you on your way to mastering the skills and will take you to the giant world where worldwide and local businesses, huge or medium, are picking up the best and quality Qlikview professionals.
This ultimate list of best Qlikview interview questions will ride you through the quick knowledge of the subject and topics like QlikView, dimensional data structures. This Qlikview interview questions and answers can be your next gateway to your next job as a Qlikview expert.
These are very Basic Qlikview Interview Questions and Answers for freshers and experienced both.
Q1: Compare QlikView and Tableau
ExceptionalGoodWorking with multidimensional dataVery GoodGoodSupport for PowerPointAvailableNot availableVisual DrilldownGoodVery GoodScalabilityGoodLimited by RAM
Q2: What kind of chart we use in Qlikview Admin?
A2: We generally uses bar chart, line chart, combo chart, scatter chart, grid chart, etc.
Q3: Explain Set analysis in qlikview ??
A3: It is used for set of groups. Mostly used in aggregated function like sum (year), etc.
Go through this insightful blog to learn why QlikView is such a great Business Intelligence tool.
Q4: Define Trellis chart?
A4: In Trellis chart we can create array of chart based on first dimension. Bitmap chart are also made of trellis display.
Q5: Explain Mini Chart?.What do you mean by sub reports and how we can create them?
A5: With the help of Mini Chart we can set type of modes instead of values in table mode. We can also change the colors.Read this QlikView Tutorial to learn more about QlikView now.
Q6: What is Pivot Table?
A6: Pivot Table:
A pivot table is better at the time of grouping. We can also show pivot table like a cross table which is a beneficial feature. But there is one disadvantage of it which is if we have to sort a pivot table than we have to sort it first according to the first dimension then to the next.
Q7: Which graph we will use for two years difference sale ?
A7: BAR Graph we will use.
Q8: What is Straight Table?
A7: A straight table is much better at the time of sorting as compared to the pivot table as we can sort it according to any column as per our choice. But it is not good for grouping purpose.
Q8: What is Aggr Function?
A8: AGGR statement function produces a virtual table, with one expression and grouped by one or more dimensions. The result of this virtual table can then be used by a further outer aggregation function(s).
Q9: What is a star schema?
A9: A Star schema is a data model in which one fact table is connected to multiple dimension tables though foreign keys
Q10: What is the difference between Join and Keep?
A10: In case of keep both the datasets are available in QlikView’s memory while in join the load statements produce only one data set from which you have to choose the columns. Also there is no concept of outer keep where as we have outer join available in case of joins.
Q11: Difference between Join and Concatenate?
A11: Join gives the resulting records from two tables as records containing columns form both tables. But Concatenate only appends the rows from one table with another.
Q12: What does MonthStart function do?
A12: Returns a value corresponding to a timestamp with the first millisecond of the first date of the month containing date.
Q13: What does Autogenerate Function do?
A13: This function auto generates values between a given range of numbers.
Q14: What is a pivot table in QlikView?
A14: Pivot Tables are used to present sum of values across many dimensions available in the data. For example showing the total sales figure for both the months and quarters in a years.
Q15: Can QlikView extract data from website? How?
A15: Yes. In QlikView script editor we have the option to extract data form a web file by giving the URL as the input.
Q16: Explain Qlikview architecture?
A16: QlikView deployments have three main infrastructure components: (Check for Qlikview Architecture)
1.QlikView Developer: Is a Windows-based desktop tool that is used by designers and developers to create
1) a data extract and transformation model and
2) to create the graphical user interface (or presentation layer).
2.QlikView Server (QVS): Handles the communication between clients and the QlikView applications. It loads QlikView applications into memory and calculates and presents user selections in real time.
3.QlikView Publisher: Loads data from different data sources (oledb/odbc, xml, xls), reduces the QlikView application and distributes to a QVS.
Because QlikView Server and Publisher have different roles and handle CPU and memory differently it’s considered a best practice to separate these two components on different servers.
Q17: Set analysis in qlikview ?
A17: Set Analysis: Used for set of groups .. mostly used in arrgeted function like sum (year) used sales of current year VS last year.
Q18: What is Synthetic key and how to avoid it in QlikView?
A18: It is undesirable to have multiple common keys across multiple tables in a QlikView data structure. This may cause QlikView to use complex keys (a.k.a. synthetic keys) to generate the connections in the data structure. Synthetic keys are generally resource heavy and may slow down calculations and, in extreme cases, overload anapplication. They also make a document harder to understand and maintain. Thereare some cases where synthetic keys cannot be avoided (e.g. Interval Match tables),but, in general, synthetic keys should always be eliminated, if possible.
comment the fileds in load script
rename the fileds in load script
rename the fileds using UNQUALIFY operator;
Q19: Explain QlikView Resident Load?
A19: Create a new logical table in QlikView, based on a previously loaded (resident) table.
Q20: What is Apply Map (Mapping Tables)?
A20: Sometimes you need to add an extra field to a table to use a combination of fields
from different tables, or you want to add a field to clean up the data structure. Qlik- View has an effective way to add single fields to a table called mapping tables. syntax — mapping ( load statement | select statement )
applymap( ‘mapname’, expr, [ , defaultexpr ] )
Q21: What Is Star Sechma ?
A21: A star schema is the simplest form of dimensional model, in which data is organized into facts and dimensions. A fact is an event that is counted or measured, such as a sale or login. A dimension contains reference information about the fact, such as date, product, or customer. A star schema is diagramed by surrounding each fact table with its associated dimensions table. The output diagram resembles a star.
Star Schema Definition : A means of aggregating data based on a set of known dimensions. It stores data multidimensionality in a two dimensional Relational Database Management System (RDBMS), such as Oracle.
Q22: What is Snowflaking Schema ?
A22: Snowflake Schema: An extension of the star schema by means of applying additional dimensions to the Dimensions of a star schema in a relational environment. Snowflaking is a form of dimensional modeling; dimensions are stored in multiple relational dimension tables. A snowflake schema is a variation of the star schema. Snowflaking is used to improve the performance of specific queries. The schema is diagramed with each fact surrounded by its associated dimensions as in a star schema, and those dimensions are further related to other dimensions, branching out into a snowflake pattern.
Q23: What is Central Link Table?
A23: In the event of multiple fact tables QlikView In-Memory Technology allows us to create a central link table that only contains the existing data combinations. Instead of Joining the tables the event dimensions can be merged (CONCATENATED) in to one central Link table. This link table can then be linked back to the event measures one side and the dimension tables on the other.
Q24: What is Container ?
A24: A container object can be used to hold multiple charts. You can use a container object to put multiple charts in the same box. All charts will appear in the same window but only one chart will appear active at a given time. You can click the chart title to switch or toggle between charts. A word of advice: Use containers with caution. They form linked objects and might affect the properties of all linked objects.
Q25: What is a synthetic key?
A25: It is a field that contains all possible combinations of common fields among tables.[/sociallocker]
Q26: Set analysis in qlikview ?
A26: Used for set of groups .. mostly used in arrgeted function like sum (year) used sales of current year VS last year.
Q27: Which graph will you used for two years difference sale ?
A27: BAR Graph
Q28: What is Inline memory in QlikView ?
A28: Create table or add field to table .
Q29: Explain about Normalized Data?
A29: Well Structured Form of Data, which doesnt have any repetition or redundancy of data. Its a kind of Relational data. Its mainly used in OLTP kind of stuffs Denormalized Data – Its a whole bunch of data without any relationship among themselves, with redundancy of data. Its mainly used in OLAP kind of stuffs.
Q30: What is Container ?
A30: A container object can be used to hold multiple charts. You can use a container object to put multiple charts in the same box. All charts will appear in the same window but only one chart will appear active at a given time. You can click the chart title to switch or toggle between charts. A word of advice: Use containers with caution. They form linked objects and might affect the properties of all linked objects.
Q31: How We Can Optimize Qv Application?
A31: It can be optimized by creating the data into qvds. When complete qvw application is changed into qvd than this qvd will be store in the RAM.
Q32: What Is Mapping Load?
A32: Mapping load is used to create the mapping table that can be used for replacing field value and field names.
Q33: Define Apply Map?
A33: apply map is used to add fields to the tables with the help of other tables. It can be used as joins.
Q34: What Is Concatenation?
A34: It means sequence of interconnected things i.e. any column or row which is related to each other can be connected through concatenation.
Q35: Define Noconcatenation?
A35: NoConcatenation prefix is used to force the identical tables as two separate internal tables.
Q36: Define Connect Statement?
A36: It is used to establish a connection to database with the help of ODBC or OLEDB interface.
Q37: What Do You Understand By Fact Constellation Schema?
A37: It is a logical database structure of data Warehouse . It is designed with the help of De Normalized Fact..
Q38: What Do You Mean By Rdbms?
A38: It stands for relational Database management System. It arranges the data into respective column and rows.
Qlikview Conclusion Interview FAQs
We know the list of Qlikview Interview Questions and Answers, Qlikview Interview Questions and Answers Freshers, Qlikview Interview Questions and Answers, Qlikview Interview Questions is overwhelming but the advantages of reading all the questions will maximize your potential and help you crack the interview. The surprising fact is that this Qlikview interview questions and answers post covers all the basic of the Qlikview technology and you have to check out the FAQs of different components of Qlikview too.
However, you will be asked with the questions in the interview related to the above mentioned questions. Preparing and understanding all the concept of Qlikview technology will help you strengthen the other little information around the topic.
After preparing these interview questions, we recommend you to go for a mock interview before facing the real one. You can take the help of your friend or a Qlikview expert to find the loop holes in your skills and knowledge. Moreover, this will also allow you in practicing and improving the communication skill which plays a vital role in getting placed and grabbing high salaries.
Remember, in the interview, the company or the business or you can say the examiner often checks your basic knowledge of the subject. If your basics is covered and strengthened, you can have the job of your dream. The industry experts understand that if the foundation of the student is already made up, it is easy for the company to educate the employ towards advance skills. If there are no basics, there is no meaning of having learnt the subject.
Therefore, it’s never too late to edge all the basics of any technology. If you think that you’ve not acquired the enough skills, you can join our upcoming batch of Qlikview Training in Noida. We are one of the best institute for Qlikview in noida which provide advance learning in the field of Qlikview Course. We’ve highly qualified professionals working with us and promise top quality education to the students.
We hope that you enjoyed reading Qlikview Interview Questions and Answers, Qlikview Interview Questions and Answers Freshers, Qlikview Interview Questions and Answers, Qlikview Interview Questions and all the FAQs associated with the interview. Do not forget to revise all the Qlikview interview questions and answers before going for the Qlikview interview. In addition to this, if you’ve any doubt or query associated with Qlikview, you can contact us anytime. We will be happy to help you out at our earliest convenience. At last, we wish you all the best for your upcoming interview on Qlikview Technology.