1. Nested Loop Join Technique – Part 1 (Table Pre-fetching) Background Table Pre-fetching has been introduced in Oracle 9i and is enabled by default. This new approach…
1. Table of Contents Background....................................................................................................................................................…
INTROUDUCTION: The DBMS describes the data that it manages, including tables and indexes. This descriptive data or metadata stored in special tables called the system catalogs…
Slide 1 4.9.07 Seite 1 Information Life Cycle, Information Value and Data Management Prof. Rudolf Bayer, Ph. D. Institut für Informatik Technische Universität München…
Slide 1 Query Optimization II R&G, Chapters 12, 13, 14 Lecture 9 Slide 2 Administrivia Homeworks 2 and 3 have been switched around. The new Hw2 will be due in ~2 weeks.…
* Database Systems (資料庫系統) November 30, 2011 Lecture #10 * Admin Assignment #4 Due midnight today Assignment #5 out on the course homepage. * Claytronics &…
Query Optimization March 10th, 2003 Very Big Picture A query execution plan is a program. There are many of them. The optimizer is trying to chose a good one. Hence, the…