Visual Basic.NET How to Program (PDF)

Chapter 19 Database, SQL and ADO .NET 891
authorID firstName lastName
6 Ted Lin
7 Praveen Sadhu
8 David McPhie
9 Cheryl Yaeger
10 Marina Zlatkina
11 Ben Wiedermann
12 Jonathan Liperi
Fig. 19.4 Data from the Authors table of Books (part 2 of 2).
The Publishers table (Fig. 19.5) consists of two fields, representing each publisher’s
unique ID and name. Figure 19.6 contains the data from the Publishers table
of the Books database.
The AuthorISBN table (Fig. 19.7) consists of two fields, which maintain ISBN numbers
for each book and their corresponding authors’ ID numbers. This table helps associate
the names of the authors with the titles of their books. Figure 19.8 contains the data from
the AuthorISBN table of the Books database. ISBN is an abbreviation for “International
Standard Book Number”—a numbering scheme by which publishers worldwide give every
book a unique identification number. [Note: To save space, we have split the contents of
this figure into two columns, each containing the authorID and isbn fields.]
Field Description
publisherID The publisher’s ID number in the database. This auto-incremented
Integer field is the table’s primary-key field.
publisherName The name of the publisher (a String).
Fig. 19.5 Publishers table from Books.
publisherID publisherName
1 Prentice Hall
2 Prentice Hall PTG
Fig. 19.6 Data from the Publishers table of Books.