Week 04 Lecture
Implementing Relational Operations
DBMS Architecture (revisited)
Relational Operations
Cost Models
Cost Models
Query Types
Example File Structures
Ex1: Operation Costs
Operation Costs Example
Scanning
Scanning
Selection via Scanning
Ex2: Cost of Search in Hashed File
Relation Copying
Ex3: Cost of Relation Copy
Cost Calculations (revisited)
Ex4: PostgreSQL Tuple Visibility
Scanning in PostgreSQL
Scanning in other File Structures
Produced: 21 Mar 2016
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