Paper - 4 MCA 3 : COMPUTER SCIENCE Data ... - Surana college

PG - 479IIilililtilfiililililtffiililil]PART - B5. a) Define OLAP. What are the different types of OLAP Servers from implementationpoint ofview ? Explain briefly.b) Explain the distinction between dimension aI datamodeling and relational datamodeling.6. a) Discuss the major steps in Extraction Transformation and Loading (ETL)process.l06lob) Discuss the various classes of users of warehouse systems. Why data quality isimportantinawarehouse? . 67. write short notes on any three : (5+5+6)i) Data Accuracy Vs Data Qualityii) Drill down analysisiii) Snowflake schema.8. a) Discuss the steps on which data cleaning should be based.b) what are the various data sources for the data warehouse ?c) What are the major types of metadata in a data warehouse ? Briefly mention thepurpose of each type. (6+6+4)