31
P.A. Bernstein, S. Melnik: Meta Data Management,
ICDE'04 Boston
Meta Modeling (cont’d)
lThe Import
function for models
ØParse text
ØCopy elements of
the parsed form into a model that conforms to its
metamodel
lThe Import
function for mappings
ØSame as models
but may require more semantic analysis
ØE.g., program
dependencies, data lineage
ØFor some
languages and mapping metamodels, Export is hard (e.g., XSLT)