Meta Data Management

P.A. Bernstein, S. Melnik: Meta Data Management, ICDE'04 Boston

Change Propagation

xsd1

xsd2

rdb1

lGiven

Ømap1 between xsd1 and SQL schema rdb1

Øxsd2, a modified version of xsd1

lProduce

Ørdb2 to store instances of xsd2

Øa mapping between xsd2 and rdb2

map1

1. map2= Match(xsd1, xsd2)

1. map2

2. map3 = map2 · map1

2. map3