transforming data by calculation
Download
Skip this Video
Download Presentation
Transforming Data by Calculation

Loading in 2 Seconds...

play fullscreen
1 / 16

Transforming Data by Calculation - PowerPoint PPT Presentation


  • 98 Views
  • Uploaded on

Transforming Data by Calculation. Author: Professor J.N. Oliveira Presentation by: Mohammadreza Vali zadeh. outline. Why data transformation? Introducing the Point-free Transform Data Structures transformation Data Impedance Mismatch conclusion. Why data transformation?.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Transforming Data by Calculation' - malha


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
transforming data by calculation

Transforming Data by Calculation

Author: Professor J.N. Oliveira

Presentation by: MohammadrezaValizadeh

outline
outline
  • Why data transformation?
  • Introducing the Point-free Transform
  • Data Structures transformation
  • Data Impedance Mismatch
  • conclusion
why data transformation
Why data transformation?
  • Watch a calculator
slide4
  • square root

Inside a machine these processes happen very much

slide5
  • Such processes happen very much in software systems too.
  • Each layers stay in different programming paradigms (object-oriented database, relational database)
slide6
  • Data transformation: Middle-ware code to bridge the gap between two different technology layers
  • Main motivation for data calculation is the need for data mapping
slide7
  • Different data models can be compared via abstraction and representation
  • Three kinds of fault solution
        • Loss of data
        • Confusion among data Data representation
        • Wrong computation Data processing

Helping in preventing any of these from happening in software designs is the main aim of this paper

introducing the point free transform
Introducing the Point-free Transform
  • Converting predicate logic formula into binary relations by removing variables and quantifier(Algebra of programming)
  • The main principle of the PF-transform:

“everything is a binary relation”

A R B

data structures transformation
Data Structures transformation
  • Data structure: Varity notation , programming language and paradigm
slide10
  • Mapping scenario (transformation)
    • Type-level mapping of a source data model to a target data model
    • Two maps (map forward & map backward) between source & target data
slide11
  • The transcription level mapping of source operation to target operation
slide12
  • Sample: Datatype

In haskell:

In c:

slide13
  • In haskell:
data impedance mismatch
Data Impedance Mismatch
  • Different data models can be compared via abstraction or representation (in transformation)
  • It has complexity

The least impedance mismatch is between a data type and itself

conclusion
conclusion
  • Mathematical approach to data transformation is presented
  • Converting data models to each other
  • Try to solve the impedance problem

Consequence: finding problems in system

  • Future: Apply transform in practice and Laplace
ad