July 2002
Beginner
424 pages
9h 30m
English
Content preview from SQL: Visual QuickStart Guide
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Creating a View with CREATE VIEW
Think of a view as being a tailored presentation that provides a tabular window into one or more base tables. The window can display an entire base table, part of a base table, or a combination of base tables (or parts thereof). A view also may reflect the data in base tables through other views—windows into windows. Generally, SQL programmers use views to present data to end users in database applications. Views offer these advantages:
Simplified data access. Views hide data complexity and simplify statements, so users can perform operations on a view more easily than on the base tables directly. If you create a complex view—one that involves, say, multiple base tables, joins, and subqueries—users can query ...
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