January 2019
Beginner
556 pages
14h 19m
English
Content preview from Learning PostgreSQL 11 - Third Edition
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Views
A view can be considered a named query or a wrapper around a SELECT statement. Views are the essential building blocks of relational databases from a UML modeling perspective; a view can be thought of as a method for a UML class. Views share several advantages with functions; the following benefits are shared between views and stored procedures. Views can be used for the following purposes:
- Simplifying complex queries and increasing code modularity
- Tuning performance by caching the view results for later use
- Decreasing the amount of SQL code
- Bridging the gap between relational databases and object-oriented languages, especially updatable views
- Implementing authorization at the row level, by leaving out rows that do not meet a certain ...
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