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Question.1  What is Hadoop? Answer:  Hadoop is a distributed computing platform written in Java. It incorporates features similar to those of the Google File System and of MapReduce. For some details, see HadoopMapReduce. Question.2   What platforms and Java versions does Hadoop run on? Answer:   Java 1.6.x or higher, preferably from..

Qustion.1   Explain Qlikview architecture? Answer:  QlikView deployments have three main infrastructure components: 1.QlikView Developer :  Is a Windows-based desktop tool that is used by designers and developers to create a) a data extract and transformation model and b) to create the  graphical user interface (or presentation layer). 2.QlikView Server (QVS)..

Question.1 Define repository in terms of OBIEE? Answer:  Repository stores the Meta data information. The extension of the repository file is “.rpd”.   With OBIEE Server, all the rules needed for security, data modeling, aggregate navigation, caching, and connectivity is stored in metadata repositories. Each metadata repository can store multiple business..

Question.1 What is Data warehouse? Answer: According to Bill Inmon, known as father of Data warehousing. “A Data warehouse is a subject oriented, integrated ,time variant, non volatile collection of data in support of management’s decision making process”. Question.2 What are the types of data warehouses? Answer: There are three..