'B l1 l2 base' diaporamas de présentation

Lecture 6: Indexes and Database Tuning

Lecture 6: Indexes and Database Tuning. Wednesday, November 1 st , 2011. Announcement. HW 5 is posted, due Monday, 11/14 Next lecture: required reading! Shapiro, Join Processing This is the paper where Grace Join was introduced, which is today standard

1.63k views • 142 slides

Data Storage and Access Methods

Data Storage and Access Methods. Min Song IS698. Database Design Process. Application 1. Application 2. Application 3. Application 4. External Model. External Model. External Model. External Model. Application 1. Conceptual requirements. Application 2. Conceptual

1.52k views • 50 slides

Storing Data: Disks and Files

515 views • 33 slides

DBMS Internals: Storage

DBMS Internals: Storage. February 27th, 2004. Representing Data Elements. Relational database elements: A tuple is represented as a record. CREATE TABLE Product ( pid INT PRIMARY KEY, name CHAR(20), description VARCHAR(200), maker CHAR(10) REFERENCES Company(name) ).

535 views • 30 slides

Layers of a DBMS

Layers of a DBMS . Query. Query optimization Execution engine Files and access methods Buffer management Disk space management. Query Processor. Query execution plan. The Memory Hierarchy. Main Memory Disks Tapes. 5-10 MB/S

572 views • 15 slides