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Understand Relational Databases Read chapter Read first chapter

2019 | OriginalPaper | Chapter

10. Optimize the Database with Oracle Architecture

Author : Jon Heller

Published in: Pro Oracle SQL Development

Publisher: Apress

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Abstract

SQL and the relational model are logical constructs built on top of our slow, physical machines. Even E.F. Codd’s original paper warned that implementing the relational model would run into physical limitations. The more advanced features we use, and the more stress we put on the database, the more likely it is for Oracle’s abstractions to fail. Oracle has put a lot of effort into making our SQL code atomic, consistent, isolated, and durable. But no system can hide all of its implementation details, and we need to understand Oracle internals in order to make things work efficiently.

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previous chapter Improve the Database with Advanced Oracle Schema Objects
next chapter Stop Coding and Start Writing
Footnotes
1
In PostgreSQL the changes are stored within the tables. That approach has advantages but requires tables be periodically “vacuumed” to reclaim space.
 
2
DBA_TAB_COLS shows the system-generated columns, whereas the data dictionary view DBA_TAB_COLUMNS only shows the user-friendly columns.
 
3
Starting with 12.2, automatic memory management is not available for machines with more than 4 gigabytes of physical memory.
 
Metadata
Title
Optimize the Database with Oracle Architecture
Author
Jon Heller
Copyright Year
2019
Publisher
Apress
Book
Pro Oracle SQL Development

Print ISBN: 978-1-4842-4516-3

Electronic ISBN: 978-1-4842-4517-0

Copyright Year: 2019

DOI
https://doi.org/10.1007/978-1-4842-4517-0_10

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