Haim Lecture2 Data And Data Modeling 2ppg

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Haim Lecture2 Data And Data Modeling 2ppg

  1. 1. Lecture 2 Part 1 – Data and data modeling Introduction • Data has many sources it can be gathered from sensors or surveys, or generated by simulations and computations • Data can be raw (untreated) or derived from raw data via some process, such as smoothing, noise-removal, scaling, or interpolation 1
  2. 2. Data Models and Management • Data • Data Objects and Models • Visualization Objects • Metadata • Data Retrieval • DBMS Data, tasks and simple visualizations • Data 1D, 2D, 3D, …, nD Structured and unstructured • Tasks Present, Confirm, Explore Query Summarize Analyze • Simple Visualizations Points Line and curves Charts and graphs 2

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