TAILIEUCHUNG - Database Management Systems: Chapter 3 - Algorithms for Query Processing and Optimization

Database Management Systems: Chapter 3 - Algorithms for Query Processing and Optimization Introduction to Query Processing; Translating SQL Queries into Relational Algebra; Algorithms for External Sorting; Algorithms for SELECT and JOIN Operations;. | Chapter 3 Algorithms for Query Processing and Optimization Chapter Outline Introduction to Query Processing Translating SQL Queries into Relational Algebra Algorithms for External Sorting Algorithms for SELECT and JOIN Operations Algorithms for PROJECT and SET Operations Implementing Aggregate Operations and Outer Joins Combining Operations using Pipelining Using Heuristics in Query Optimization Using Selectivity and Cost Estimates in Query Optimization Overview of Query Optimization in Oracle Semantic Query Optimization Introduction to Query Processing Query optimization: the process of choosing a suitable execution strategy for processing a query. Two internal representations of a query – Query Tree – Query Graph Typical steps when processing a high-level query Translating SQL Queries into Relational Algebra (1) Query block: the basic unit that can be translated into the algebraic operators and optimized. A query block contains a single SELECT-FROM-WHERE expression, as

• Cơ sở dữ liệu
• Database Management Systems
• Algorithms for Query Processing and Optimization
• Query Processing
• Translating SQL Queries into Relational Algebra
• Algorithms for External Sorting
• Algorithms for SELECT and JOIN Operations
• Lecture Database Systems
• Database systems
• Database systems concepts
• Database systems architecture
• Database languages
• Data management systems framework
• Lecture Database management systems
• File based system
• Characteristics of the database
• Data dictionary
• Fundamentals of database management systems
• Logical database design
• Physical database design
• Object oriented database management
• Data administration
• Bài giảng Hệ quản trị cơ sở dữ liệu
• Operating systems
• Attribute alias
• Relational database design
• EER to relational mapping
• Mapping EER model
• Regular entity types
• Database application development process
• Data flow diagrams
• Database design
• Lecture Distributed Database Management Systems
• Distributed Database Management Systems
• Bài giảng Hệ quản trị cơ sở dữ liệu phân tán
• Transaction management
• Database consistency
• Database development
• Relational databases
• Database environments
• Object database management systems
• Object database
• Distributed database systems
• Principles of distributed database systems
• Cơ sở dữ liệu phân tán
• Peer to peer data management
• Peer reference architecture
• Web data management
• Web models
• Entity relationship model
• ER Diagram
• ER model
• Relational model
• Relational data model
• Relational database
• Relation schema
• Database definition
• Commercial applications
• File processing system
• Database architecture
• Data independence
• Conceptual schema
• Physical implementation of the database
• Physical data independence
• Cross reference matrix
• Database modeling
• Entity relationship data model
• Semantic data model
• Conceptual database design
• Data flow diagram
• E R data model
• E R database design
• Mathematical relations
• Normalization summary
• Data processing
• Consistent state of the database
• Transaction terminates
• Transaction boundaries
• Traditional file processing system
• Database approach
• Distributed computing system
• Fragmentation transparency
• Operating system
• Data modeling
• Relational data retrieval
• Relational database model
• Introduction to MIS
• Management Information Systems
• Information systems
• Database applications