DBMS-Data Warehousing and Data Mining
DBMS-Data Warehousing and Data Mining
31. Data mart is a data store which is
- a specialised and subject-oriented.
- integrated and time-variant.
- volatile data store.
- All of these
32. A data mart may contain
- summarised data.
- de-normalised data.
- aggregated departmental data.
- All of these.
33. Online analytical processing (OLAP) is an advanced data analysis environment that supports
- decision making
- business modelling.
- operations research activities.
- All of these
34. OLAP is
- a dynamic synthesis of multidimentional data.
- a analysis of multidimentional data.
- a consolidation of large volumes of multi-dimensional data.
- All of these
35. Data mining is
- the process of extracting valid, previously unknown comprehensible and actionable information from large databases and using it to make crucial business decisions.
- a tool that allows end-users direct access and manipulation of data from within data-warehousing environment without the intervention of customised programming activity.
- a tool that helps end users extract useful business information from large databases.
- All of these.
36. The expanded from of KDD is
- Knowledge Discovery in Database
- Knowledge of decision making in Databases.
- Knowledge-based Decision Data.
- Karnough Decision Database