Business intelligence Interview Questions and Answers

1 :: 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

Is This Answer Correct?    3 Yes 0 No

2 :: What is a Universe in Business Intelligence?

A "universe" is a "Business object" terminology. Business objects also happens to be the name of the company. The universe is the interfacing layer between the client and the datawarehouse . The universe defines the relationship among the various tables in the datawarehouse.

Or

Universe is a semantic layer between the database and the user interface (reports).

Is This Answer Correct?    1 Yes 0 No

3 :: 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 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 writes an efficient sql and reads an accurate data from db.To design and architect having good knowledge on DB understanding the report requirements.

Is This Answer Correct?    0 Yes 0 No

4 :: What are the various modules in Business Objects product?

► Business Objects Reporter
► Reporting & Analyzing tool
► Designer
► Universe creation
► database interaction
► connectivity

Supervisor - For Administrative purposes
Webintelligence - Access of report data through internet
BroadCast Agent - For scheduling the reports
Data Integrator - The ETL tool of Business Objects, designed to handle huge amounts of data

Is This Answer Correct?    0 Yes 0 No

5 :: 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 analysis.

MOLAP - Multidimensional OLAP.
This term designates a cartesian data structure more specifically. In effect, MOLAP contrasts with ROLAP. Inb 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, departmental user. Data is stored in cubes on the desktop. It's like having your own spreadsheet. Since the data is local, end users dont 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.

Is This Answer Correct?    0 Yes 0 No