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Saturday, June 15, 2019

40 Top Business Intelligence Interview Questions and Answers {Updated}

Business Intelligence Interview Questions and Answers for experienced PDF, Read commonly asked Business Intelligence Job Interview Questions with Answer PDF for Freshers.


Read Business Intelligence Interview Questions and Answers

Why we cannot create an aggregate on an ODS Object?
  • Operational Data Store has very low data latency. Data moved to ODS mostly on event-based rather than time-based ETL to Data Warehouse/Data Mart.
  • ODS is closer to the OLTP system. We don’t normally prefer to store aggregated data in OLTP. So it is with ODS.
  • Unlike data warehouse where data is HISTORICAL, ODS is near real-time(NRT). So data aggregation is less important is ODS as data keeps changing.


How do u Conditional Format.?
while creating a chat in BI Answers, you can define the conditions and can apply color formatting.

What is Business Intelligence?
Business Intelligence is a process for increasing the competitive advantage of a business by intelligent use of available data in decision making.

The five key stages of Business Intelligence:
  • Data Sourcing
  • Data Analysis
  • Situation Awareness
  • Risk Assessment
  • Decision Support


What is the hierarchy relationship in a dimension?
Whether it is:

1. 1:1


2. 1:m


3. m:m


4. 1: M


What is Guided Navigation?
I think it is just the arrangement of hyperlinks to guide the user to navigate between the reports to do the analysis.

What is the Universe in Business Intelligence?
A “universe” is a “Business object” terminology. Business objects also happen to be the name of the company. The universe is the interfacing layer between the client and the data warehouse. The universe defines the relationship between the various tables in the data warehouse.

Or
The universe is a semantic layer between the database and the user interface (reports).



How to connect GDE to Co-Operating system in Abinitio?
We can connect AbInitio GDE with Co>operating system using Run->Settings. In there u can specify the host IP address and the connection type. Refer AbInitio help for further details.

How the users Created Differs From RPD/Answers/Dashboards Level?
RPD users can do administrator tasks like adding a new data source, create hierarchies, change column names whereas Answers users may create new charts, edit those charts and Dashboard users may only view and analyze the dashboard or can edit dashboard by adding/removing charts objects.

What is OLAP in Business Intelligence?
Online Analytical Processing, a category of software tools that provides analysis of data stored in a database. OLAP tools enable users to analyze different dimensions of multidimensional data. For example, it provides a time series and trend analysis views. The chief component of OLAP is the OLAP server, which sits between a client and a database management systems (DBMS). The OLAP server understands how data is organized in the database and has special functions analyzing the data.

A good OLAP interface has written an efficient SQL and reads accurate data from DB. To design and architect having good knowledge of DB understanding the report requirements.



Explain the Name of some standard Business Intelligence tools in the market?
Some of the standard Business Intelligence tools in the market According to there performance

1)MICROSTRATEGY

2)BUSINESS OBJECTS, CRYSTAL REPORTS


3)COGNOS REPORT NET


4)MS-OLAP SERVICES




Online/Offline Mode how it Impacts in Dev and Deployment?
Online Mode- You can make changes in the RPD file and push in changes which will be immediately visible to the users who are already connected. This feature we may use in the production environment.

Offline mode- can be useful in a test or development environment.


What are the various modules in the Business Objects product?
  • Business Objects Reporter
  • Reporting & Analyzing tool
  • Designer
  • Universe creation
  • database interaction
  • connectivity
Supervisor – For Administrative purposes

Web intelligence – Access of report data through the internet


BroadCast Agent – For scheduling the reports


Data Integrator – The ETL tool of Business Objects, designed to handle huge amounts of data.




What are the various modules in the Business Objects product Suite?
Supervisor:
The supervisor is the control center for the administration and security of your entire BusinessObjects deployment.

Designer:
The designer is the tool used to create, manage and distribute universe for BusinessObjects and WebIntelligence Users. A universe is a file that contains connection parameters for one or more database middleware and SQL structure called objects that map to actual SQL structure in the database as columns, tables, and database.


BusinessObjects Full client Reporting tool:
Helps to create business objects reports based on the universe and also from the other data sources.


BusinessObjects Thin client Reporting tool:
Helps to query and analysis on the universe and also share the report among other users. It doesn’t require any software, just need a web browser and the system connected to the business objects server.


Auditor:
The tool is used to monitor and analyze user and system activity.


Application Foundation:
This module covers a set of products which is used for Enterprise Performance Management (EPM). The tools are

  • Dashboard manager
  • Scorecard
  • Performance Management Applications


Explain the concepts and capabilities of Business Intelligence.
Business Intelligence helps to manage data by applying different skills, technologies, security and quality risks. This also helps in achieving a better understanding of data. Business intelligence can be considered as the collective information. It helps in making predictions of business operations using gathered data in a warehouse. Business intelligence application helps to tackle sales, financial, production, etc business data. It helps in better decision making and can be also considered as a decision support system.

What is OLAP, MOLAP, ROLAP, DOLAP, HOLAP? Explain with Examples?
OLAP – On-Line Analytical Processing.

Designates a category of applications and technologies that allow the collection, storage, manipulation and reproduction of multidimensional data, with the goal of the analysis.


MOLAP – Multidimensional OLAP.

This term designates a cartesian data structure more specifically. In effect, MOLAP contrasts with ROLAP. In the former, joins between tables are already suitable, which enhances performances. In the latter, joins are computed during the request.

Targeted at groups of users because it’s a shared environment. Data is stored in an exclusive server-based format. It performs more complex analysis of data.
DOLAP – Desktop OLAP.

Small OLAP products for local multidimensional analysis Desktop OLAP. There can be a mini multidimensional database (using Personal Express), or extraction of a datacube (using Business Objects).


Designed for low-end, single, the departmental user. Data is stored in cubes on the desktop. It’s like having your own spreadsheet. Since the data is local, end users don't have to worry about performance hits against the server.

ROLAP – Relational OLAP.

Designates one or several star schemas stored in relational databases. This technology permits multidimensional analysis with data stored in relational databases.


Used for large departments or groups because it supports large amounts of data and users.

HOLAP: Hybridization of OLAP, which can include any of the above.



From where you Get the Logical Query of your Request?
The logical SQL generated by the server can be viewed in BI Answers. If I have not understood the question, Please raise your voice.

Name some of the standard Business Intelligence tools in the market.
Business intelligence tools are to report, analyze and present data. Few of the tools available in the market are:

• Eclipse BIRT Project:- Based on eclipse. Mainly used for web applications and it is open source.

• Freereporting.com:- It is a free web-based reporting tool.


• Jaspersoft:- BI tool used for reporting, ETL, etc.


• Pentaho:- Has data mining, dashboard, and workflow capabilities.


• Openl:- A web application used for OLAP reporting.




Why an info cube has a maximum of 16 dimensions?
It depends upon the Database limits provided to define the Foreign key constraint, e.g. in SQL Server 2005, the recommended max limit for foreign keys is 253, but you can define more.

Major Challenges You Faced While Creating the RPD?
Every now and then there are problems with the database connections but the problem while creating the repository RPD files comes with complex schemas made on OLTP systems consisting of a lot of joins and checking the results. The type of join made need to be checked. By default, it is inner join but sometimes the requirement demands other types of joins. There are a lot of problems with the date formats also.

Explain the Dashboard in business intelligence.
A dashboard in business intelligence allows huge data and reports to be read in a single graphical interface. They help in making faster decisions by relying on measurable data seen at a glance. They can also be used to get into details of this data to analyze the root cause of any business performance. It represents the business data and business state at a high level. Dashboards can also be used for cost control. Example of the need for a dashboard: Banks run thousands of ATM’s. They need to know how much cash is deposited, how much is left etc.

What is BAS? What is the function?
The Business Application Support (BAS) functional area at SLAC provides administrative computing services to the Business Services Division and Human Resources Department. We are responsible for software development and maintenance of the PeopleSoft? Applications and consultation to customers with their computer-related tasks.

What is Global Filter and how they differ From Column Filter?
Column filter- simply a filter applied on a column which we can use to restrict our column values while pulling the data or in charts to see the related content.

Global filter- Not sure. I understand this filter will have an impact on across the application but I really don’t understand where and how it can be the user. I heard of global variables but not global filters.



Explain the SQL Server 2005 Business Intelligence components.
• SQL Server Integration Services:- Used for data transformation and creation. Used in data acquisition form a source system.

• SQL Server Analysis Services: Allows data discovery using data mining. Using business logic it supports data enhancement.


• SQL Server Reporting Services:- Used for Data presentation and distribution access.


Name some of the standard Business Intelligence tools in the Market?
Some of the standard Business Intelligence tools in the market According to their performance

  • MICROSTRATEGY
  • BUSINESS OBJECTS, CRYSTAL REPORTS
  • COGNOS REPORT NET
  • MS-OLAP SERVICES
Or
  • Seagate Crystal report
  • SAS
  • Business objects
  • Microstrategy
  • Cognos
  • Microsoft OLAP
  • Hyperion
  • Microsoft integrated services


How to make the Delivery Profilers Work?
When we are Use SA System how Does SA Server understand that It needs to use it For Getting the User Profile information?

How do we enhance the functionality of the reports in BO?
You can format the BO Reports by using various features available. You can turn the table reports into a 2-Dimensional or 3-Dimensional charts. You can apply an Alert to show some data in a different format, based on some business rule. You can also create some prompts, which will ask the user to give some input values before seeing the reports, this way they will see only filtered data. There are many similar exciting options available to enhance the reports.

Where to Configure the Scheduler?
We configure the OBIEE scheduler in the database.

What are dashboards?
A management reporting tool to gauge how well the organization company is performing. It normally uses “traffic-lights” or “smiley faces” to determine the status.

How to hide Certain Columns From a User?
Application access level security- Do not add the column in the report, Do not add the column in the presentation layer.

Explain about Auditing in BO XI R2? What is the use of it?
The auditor is used by the business objects administrators to know the complete information of the business intelligence system.

  • it monitors the entire BI system at a glance.
  • Analyzes usage and change impact
  • optimizes the BI deployment


How can we Enable Drills in a Given Column Data?
To enable Drill down for a column, it should be included in the hierarchy in OBIEE. Hyperion IR has a drill anywhere feature where don’t have to define and can drill to any available column.

How do we Tune the BO Reports for Performance Improvement?
We can tune the report by using index awareness in the universe

Is Drill Down Possible without the attribute being a Part of a Hierarchical Dimension?
No, it’s not possible.

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