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03-1-REVIEW - Some Terminology Handout
OLAP - Online Analytical Processing
- Software that allows users to easily analyze data online by manipulating the presentation of facts
and dimensions.
- By now you have seen a little of it
OLTP - Online Transaction Processing
- Software that processes business transactions such as order processing, visitor registration, support
calls
Facts
- Numeric values that represent
- Amounts
- Sales $
- Amt
- Quantity on Hand)
- Or events
- Registration count
Dimensions
- Hierarchies that represent the perspectives a business can take of the facts
- Time
- Product
- Geography
- Customer
RDBMS - Relational Database Management System
- Software for building and managing databases using SQL (Standard Query Language)
Datamart
- A targeted subset of a data warehouse to support a particular subject area or departmental
requirement
Cube
- A multidimensional database (MDDB) pre-summarized (aggregation) for fast performance and easy
slice-and-dice
Slice-and-Dice
- The action of changing dimensions to see information from a different perspective
ROLAP and MOLAP
- Special purpose OLAP servers that handle multidimensional data and operations
ROLL-UP
- Aggregate on some dimension
- Daily aggregates into weekly, monthly etc
- Store data aggregates into stores in city, region, province, and country
DRILL-DOWN
- De-aggregate on some dimension
- Getting at greater levels of detail
CLIENTS
- Query and reporting tools
- Analysis tools
DATA MINING
- Discovering patterns of various forms by “mining” through the data
- Client tools used to do mining
- PowerPlay by Cognos (Canadian company) is one of them (now IBM owned)
Document1 by rt -- 9 February 2016
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