chandrarekha

 Profile Answers by chandrarekha 

• Nov 28th, 2007

 

You can extend the metadata stored in the repository by associating an repository object  . this is called metadata extension
there are tow types of metadata extensions
user defined
  vendor defined

for example , if u want to add a new port to the source that u can do it by metadata extensions

prabhat007

 Profile Answers by prabhat007 

• Dec 8th, 2007

 

Metadata Extensions:
Who created,what purpose,version number etc for future enhancements. Information about mapping for other people to better understand.

Metadata information in repository can be reported using informatica metadata tool.

ORAINFO

 Profile Answers by ORAINFO 

• Nov 18th, 2008

 

Metadata means data about data. Metadata extension means any additional information about the data. For Example let us consider a source qualifier and then I want to put any extra info about it like date of creation, author etc .this can be put in that metadata extension. We can add a row as we do each time to add a port. The columns of this row are NAME, DATATYPE (string,number,bool), VALUE, RESUABLE, UNOVERRIDE, DESCRIPTION, PRECISION.

Can create them in the SOURCE, TARGET, MAPPINGS, TRANSFORMATION, MAPPLET.

Can be of two types REUSABLE and NON-RESUABLE.

NON-RESUABLE can be converted to REUSABLE but vice-versa is not true.

Only the value column can be changed other columns can't be refined.

Correct me if I am wrong and give any extra info available especially for the
last part - How Informatica deals with it.