Data Warehousing and Data Mining207510 marksComponents of data warehouse
Describe how bitmap and join indexing are used to represent OLAP data. Explain the different components of data warehouse.
Describe how bitmap and join indexing are used to represent OLAP data. Explain the different components of data warehouse.[10]
--- Definition: A bitmap index is a special type of index that uses bit vectors (arrays of 0s and 1s) to represent the presence or absence of a value for each row in a table. It is highly efficient for OLAP queries involving low-cardinality attributes (attributes with few distinct values), such a...