07-02-2013, 02:02 PM
Data warehouse and OLAP
Data warehouse and OLAP.ppt (Size: 467 KB / Downloads: 30)
Evolution of Database Technology
1960s and earlier:
Data Collection and Database Creation
Primitive file processing
Evolution of Database Technology
1970s - early 1980s:
Data Base Management Systems
Hieratical and network database systems
Relational database Systems
Query languages: SQL
Transactions, concurrency control and recovery.
On-line transaction processing (OLTP)
What Is Data Mining
Data mining refers to extracting or mining knowledge from large amounts of data.
Mining of gold from rocks or sand
Knowledge mining from data, knowledge extraction, data/pattern analysis, data archeology, and data dreding.
Knowledge Discovery from data, or KDD
Steps of a KDD Process
Choosing functions of data mining
summarization, classification, regression, association, clustering.
Choosing the mining algorithms
Data mining: search for patterns of interest
Pattern evaluation and knowledge presentation
visualization, transformation, removing redundant patterns, etc.
Use of discovered knowledge