Page 58 - DCAP606_BUSINESS_INTELLIGENCE
P. 58

Unit 4: Understanding OLAP




                                                                                                Notes
                                   Figure 4.5: Example of Metadata























          Source:  http://t3.gstatic.com/images?q=tbn:ANd9GcR1zN_FO3Vk1jHWkuCKQAjxB3O0O41
          SbnLZLnNdYmhmg4HWyLM_ZQ

          4.7.1 Types of Metadata

          There are three main types of metadata:

               Descriptive metadata describes a resource for purposes such as discovery and identification.
               It can include elements such as title, abstract, author, and keywords. Sample elements of it
               are unique identifiers (PURL, Handle), physical attributes (media, dimensions condition)
               and bibliographic attributes (title, author/creator, language, keywords).
               Structural metadata indicates how compound objects are put together.


                 Example: How pages are ordered to form chapters.
               Sample elements of it are structuring tags such as title page, table of contents, chapters,
               parts etc.
               Administrative metadata provides information to help manage a resource, such as when
               and how it was created, file type and other technical information, and who can access it.



             Did u know? Two further subtypes of administrative metadata:
             (i)  Rights management metadata, which deals with intellectual property rights, and

             (ii)  Preservation metadata, which contains information needed to archive and preserve
                 a resource.
             Sample elements include technical data such as scanner type and model, resolution, bit
             depth, colour space, file format, compression, light source, owner, copyright date etc.




              Task  Give examples for the use of SAS metadata DATA step functions to identify and
            track metadata that describes data libraries and users.





                                           LOVELY PROFESSIONAL UNIVERSITY                                   53
   53   54   55   56   57   58   59   60   61   62   63