'Physical query plans' diaporamas de présentation

Physical query plans - PowerPoint PPT Presentation

Completing the Physical-Query-Plan and Chapter 16 Summary (16.7-16.8)

Completing the Physical-Query-Plan and Chapter 16 Summary (16.7-16.8)

Completing the Physical-Query-Plan and Chapter 16 Summary (16.7-16.8). CS257 Spring 2009 Professor Tsau Lin Student: Suntorn Sae-Eung Donavon Norwood. Outline. 16.7 Completing the Physical-Query-Plan I. Choosing a Selection Method II. Choosing a Join Method

★ ★ ★ ★ ★

609 views • 51 slides
Query Compilation

Query Compilation

Query Compilation. Evaluating Logical Query Plan Physical Query Plan. Source: our textbook, slides by Hector Garcia-Molina. Outline. Convert SQL query to a parse tree Semantic checking: attributes, relation names, types

★ ★ ★ ★ ★

516 views • 41 slides
Query Compilation

Query Compilation

Query Compilation. Evaluating Logical Query Plan Physical Query Plan. Source: our textbook, slides by Hector Garcia-Molina. Outline. Convert SQL query to a parse tree Semantic checking: attributes, relation names, types

★ ★ ★ ★ ★

497 views • 41 slides
Query Execution

Query Execution

Query Execution. Since our SQL queries are very high level the query processor does a lot of processing to supply all the details. An SQL query is translated internally into a relational algebra expression.

★ ★ ★ ★ ★

384 views • 38 slides
Query Execution

Query Execution

Query Execution. Optimizing Performance. Resolving an SQL query. Since our SQL queries are very high level, the query processor must do a lot of additional processing to supply all of the missing details.

★ ★ ★ ★ ★

271 views • 27 slides

View Physical query plans PowerPoint (PPT) presentations online in SlideServe. SlideServe has a very huge collection of Physical query plans PowerPoint presentations. You can view or download Physical query plans presentations for your school assignment or business presentation. Browse for the presentations on every topic that you want.