Sunday, January 8, 2012

bigData - 1


  1. What is bigData ?
  2. How is it bigData differnet from Data Warehouse ?
  3. What kind of data sources categorize into bigData ?
  4. Why is it required to have a different kind of software/hardware solutions to handle bigData ?
  5. What kind of solutions are being developed to handle bigData ?
  6. What is hadoop ? Is this same as bigData ? different ? how ?
  7. What are the upcoming new technology suites for handling bigData ?

Monday, January 2, 2012

Data Modelling - 1


  1. What are aggregates and why do you need them ?
  2. What is the role of a logical data modeler and physical data modeler ?
  3. How do you gather requirements for creating data model ?
  4. What is the naming convention you follow ?
  5. What are the different notations that can be used ?
  6. What is cardinality ?
  7. What are identifying and non identifying relationships ?
  8. Why do you need reports from data model ?
  9. What kind of Meta data do you capture in a data model ?


    Other useful links - helps in finding answers -
    http://www.agiledata.org/essays/dataModeling101.html