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SQL in a Nutshell, 3rd Edition
book

SQL in a Nutshell, 3rd Edition

by Kevin Kline
November 2008
Intermediate to advanced content levelIntermediate to advanced
591 pages
17h 28m
English
O'Reilly Media, Inc.
Content preview from SQL in a Nutshell, 3rd Edition

Scope

Constraints may be applied at the column level or the table level:

Column-level constraints

Are declared as part of a column definition and apply only to that column.

Table-level constraints

Are declared independently from any column definitions (traditionally, at the end of a CREATE TABLE statement) and may apply to one or more columns in the table. A table constraint is required when you wish to define a constraint that applies to more than one column.

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Publisher Resources

ISBN: 9780596155322Errata Page