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VisualAge for Java Version 3: Persistence Builder with GUIs, Servlets, and Java Server Pages
book

VisualAge for Java Version 3: Persistence Builder with GUIs, Servlets, and Java Server Pages

by Ueli Wahli, Greg Behrend, Daniel Peter
March 2000
Beginner to intermediate content levelBeginner to intermediate
472 pages
11h 17m
English
IBM Redbooks
Content preview from VisualAge for Java Version 3: Persistence Builder with GUIs, Servlets, and Java Server Pages
186 VisualAge for Java Version 3: Persistence Builder with GUIs, Servlets, and JSPs
Figure 119. BankAccount with Inheritance: Checking and Savings
There are two ways to match an inheritance tree to a relational database:
either all of the attributes of the class hierarchy are combined in one table
(single table inheritance mapping) or a table is used for each class and the
necessary foreign key relationships between the tables are defined (multiple
table inheritance mapping).
Single Table Inheritance Mapping
Mapping the BankAccount class and its subclasses into one table means that
we put all attributes, whether from the BankAccount class or from an ...
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Publisher Resources

ISBN: 0738415820Purchase bookAdditional Material