Interview Questions & Answers Series for BI Developer

Q&A Videos

Author
Trainer: Gurunatha Dogi

What you'll learn :-

If you are a BI developer, in this Interview Questions and Answers combo course, we have covered more than 100 questions that are frequently asked to both fresher and experienced candidates, and we have simplified each question answer with a good example, as well as how to answer an interviewer.

Course Content

    • Question 1 - What is ETL Process with example?
    • Question 2 - Difference between control flow and data flow in SSIS?
    • Question 3 - Explain the architecture of SSIS?
    • Question 4 - Explain the types of Perfmon counters for SSIS?
    • Question 5 - Explain the types of Cache Mode in SSIS Lookup component?
    • Question 6 - How to do Error Handling in SSIS.
    • Question 7 - Types of Containers in SSIS.
    • Question 8 - How to do SSIS Package Deployment to SQL Server?
    • Question 9 - What are Transactions?
    • Question 10 - What are Checkpoints?
    • Question 11 : What is Logging in SSIS?
    • Question 11 : What is Logging in SSIS?
    • Question 13 : Difference between Merge and Union All?
    • Question 14 : What is the Data Profiling task?
    • Question 15 : What is Precedence Constraints?
    • Question 16 : What is Merge Join and explain its different types of Joins?
    • Question 17 : Difference between OLTP & OLAP.
    • Question 18 : What is Fact, Dimension, Cube, Star Schema and Snow Flake?
    • Question 19 : How to create a Cube in SSAS?
    • Question 20 : What is SCD?
    • Question 21 :- What is CDC?
    • Question 22 :- What is SSRS, what is Data Region, can embed/display SSRS Reports in any application, File extension and Code behind of SSRS Report.
    • Question 23 :- How to Deploy SSRS reports?
    • Question 24 :- Difference between Tabular and Matrix Report.
    • Question 25 :- What is Page Break in SSRS?
    • Question 26 :- Difference between Drilldown Report & Sub Report.
  • Question 01 :- What are Calculated columns ?
  • Question 02 :- Where can calculated columns be created in Power BI?
  • Question 03 :- What are calculated measures in Power BI?
  • Question 04 :- Where can calculated measures be created in Power BI?
  • Question 05 :- Difference between Calculated Column and Measure in Power BI?
  • Question 06 :- What are M codes in power bi & Where Can You Write Power Query M Code?
  • Question 07 :- What are Parameters in Power BI?
  • Question 08 :- What is Power BI data gateway?
  • Question 09 :- Do we need data gateway for schedule refresh in Power BI?
  • Question 10 :- What is Query Folding in Power BI?
  • Question 11 :- What is the use of Split function in Power BI?
  • Question 12 :- Difference between visual level, page level and report level filters in Power BI?
  • Question 13:- Difference between ALL and ALL EXCEPT functions?
  • Question 14:- What is "What if" parameter in Power BI?
  • Question 15:- How to keep or remove specific rows in Power BI?
  • Question 16:- What is grouping in power bi and how to use it?
  • Question 17:- Difference between Distinct and Values in Power BI?
  • Question 18:-What is DAX and most common DAX functions used?
  • Question 19:- What is Power Query?
  • Question 20:- What are different types of Filters in Power BI Reports?
  • Question 21 :- Difference between sum and sumx in power bi?
  • Question 22 :- Import Query vs Direct Query in power bi?
  • Question 23 - Append Query VS Merge Query in Power BI ?
  • Question 24 - Types of Join and Types of Join kind in Power BI ?
  • Question 25 - What is LookupValue DAX function in Power BI ?
  • Question 26 - Understand Datesbetween vs DatesinPeriod ?
  • Question 27 - COUNT, COUNTA, COUNTX, COUNTAX, COUNTBLANK, DISTINCTCOUNT, COUNTROWS ?
  • Question 28 - How to filter Top N in Power BI ?
  • Question 29 :- Power BI USERELATIONSHIP VS TREATAS ?
  • Question 30:- What is Bookmark in Power BI?
  • Question 31 - Variables in Power BI ?
  • Question 32 - Power Pivot VS Power Unpivot ?
  • Question 33 - How to use the DAX RANKX function in Power BI?
  • Question 34 - Table Joins - Crossjoin, Union, Except & Intersect?
  • Question 35 :- How to use Calculate DAX Function in Power BI ?
  • Question 01 :- What is PHP?
  • Question 02 :- Advantages of using PHP?
  • Question 03 :- What are popular frameworks in PHP?
  • Question 04 :- What are popular Content Management System (CMS) in PHP?
  • Question 05 :- What is the difference between "echo" and "print" in PHP?
  • Question 06 :- How a variable is declared in PHP?
  • Question 07 :- What is the difference between $message and $$message?
  • Question 08 :- How to write JavaScript in PHP?
  • Question 09 :- How show JavaScript alert with PHP variable?
  • Question 10 :- What is the difference between JavaScript and PHP?
  • Question 11 :- How to show PHP errors on the same page?
  • Question 12 :- What is the most used method for hashing passwords in PHP?
  • Question 13 :- What are the different types of Array in PHP?
  • Question 14 :- What is the Purpose of @ in PHP?
  • Question 15 :- What are the different types of variables present in PHP?
  • Question 16 :- How does the 'foreach' loop work in PHP?
  • Question 17 :- What is the use of session_start() and session_destroy() function in PHP?
  • Question 18 :- What are the different ways of handling the result set of MySQLi in PHP?
  • Question 19 :- What are magic constants in PHP?
  • Question 20 :- What are the different loops in PHP?
  • Question 21 :- Explain some of the PHP string functions?
  • Question 22 :- How we can define a static function in class and what are uses?
  • Question 23 :- What is the exact difference between explode and implode?
  • Question 24 :- Difference between $_POSTand $_REQUEST?
  • Question 25 :- How we can change the response header?
  • Question 26 :- What are the steps to create a new database using MySQL and PHP?
  • Question 27 :- What is htaccess ? Why do we use it and where?
  • Question 28 :- Whare the constructor and destructor in PHP?
  • Question 29 :- Is multiple inheritance is supported by PHP?
  • Question 30 :- How to increase the execution time of PHP Script?
  • Question 31 :- How to add 301 redirects in PHP?
  • Question 32 :- Difference between include() and require() ?
  • Question 33 :- What is the difference between "==" and "===" in PHP ?
  • Question 34 :- How to register a variable in PHP Session ?
  • Question 35 :- What is the use of imagetypes() function?
  • Question 36 :- Which method is used to check the data type of any variable?
  • Question 37 :- Which method is used to count the total number of rows returned by any query?
  • Question 38 :- Which function you can use to open a file from a folder?
  • Question 39 :- Which function is used to delete a file from a folder?
  • Question 40 :- What is the use of strip_tags() method?
  • Question 41 :- What is a Lambda function in PHP?
  • Question 42 :- What is Overloading and Overriding in PHP?
  • Question 43 :- What is the static variable in function useful for?
  • Question 44 :- How can we define a variable accessible in functions of a PHP script?
  • Question 45 :-How is a constant defined in a PHP script ?

    MySQL Interview Questions and Answers :-

    • Question 1 : Explain Normalization & Denormalization?
    • Question 2 : Explain 1st,2nd and 3rd Normal Form in MYSQL Database Normalization?
    • Question 3 : Primary Key vs Foreign Key?
    • Question 4 : Primary Key vs Candidate Key vs Unique Key?
    • Question 5 : What is a trigger? How you can create a trigger in MYSQL?
    • Question 6 : Explain Transactions and How to Implement it in MYSQL?
    • Question 7 : What is an index? How can an index be declared in MYSQL?
    • Question 8 : What is the view? How can you create and drop view in MYSQL?
    • Question 9 : Explain Inner Join?
    • Question 10 : Explain Left Join?
    • Question 11 : Explain Right Join?
    • Question 12 : Explain Cross Join?
    • Question 13 : MYSQL Union vs Union All?
    • Question 14 : What are MYSQL Aliases?
    • Question 15 : Explain MYSQL Subquery?
    • Question 16 : Blob vs Text data types in MYSQL?
    • Question 17 : CHAR vs VARCHAR data types?
    • Question 18 : What are the differences between InnoDB and MyISAM engines?
    • Question 19 : What are some of the common MYSQL COMMANDS?
    • Question 20 : What are aggregate functions in MYSQL?
    • Question 21: How can ENUM be used in MySQL?
    • Question 22:Explain GRANT Command in MySQL?
    • Question 23:What is the difference between Truncate and Delete?
    • Question 24 :- Explain MySQL Stored Procedures ?
    • Question 25 :- Explain MySQL Stored Function ?
    • Question 26 :- MySQL - Stored Procedures VS Stored Function
    • Question 27 :- What is self-referencing foreign key?
    • Question 28 :- What is the difference between the LIKE and REGEXP Operators?
    • Question 29 :- How does query cache work in MySQL?
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