Potpourri of current database trends

1
Potpourri of current database trends

• Data mining
• Uses
• Goals
• Methods
• The WWW and databases
• Specialized databases
• Multimedia
• Mobile databases
• Geographic Information Systems
• Biological databases
• Digital Libraries

2
Data Mining

• Uses
• Marketing Analyzing data on consumer behavior
  and predicting strategies to maximize profit
• Science Predicting correlations between
  biomolecules
• Finance Which of the applicants are eligible for
  loans?
• Manufacturing Maximize number of cars produced
  per dollar
• Health Care Maximize number of patients seen per
  day
• Goals
• Prediction
• Identification
• Classification
• Optimization

3
Data Mining

• Methods
• Association Rules If customer buys milk, he also
  buys eggs (Conclusion Places eggs next to milk
  in store)
• Sequential pattern algorithms A week later,
  customer will return to buy a battery for his
  camcorder
• Time series pattern algorithms When should I
  buy, when should I sell stock?
• Classification rules Class A of applicants is
  eligible for a mortgage loan while class B is not
• Machine learning Use known data to predict
  unknown data

4

• WWW Databases (Fig 27.1)
• Alternative to CGI scripts
• ASP, JSP, ODBC, JDBC ..
• Alternative to RDBMS
• XML databases
• Flat file databases
• Mobile Databases
• DDBMS with a twist (Fig 27.4)
• Geographical Information Systems (Fig 27.5)

5
Multimedia Databases

• Properties
• Heterogeneous data (Video, Audio, Images,
  Animations..) - Data varies in both type and
  length
• Synchronous delivery required
• Approaches
• BLOBs (Binary large object)
• Alternatives to text-based indexing (Image
  processing)
• Do not support compute intensive queries

6
Digital libraries

• Virtual library
• Millions of species
• Species share some properties and not others
• DNA sequence of 100 known
• Traditionally, non-standardized flat file
  retrieval systems
• Newer approaches try to include other kinds of
  data
• and provide more functionality

Biological Databases