PHYSICAL DATABASE DESIGN pps

Ngày tải lên: 01/08/2014, 09:21

... on Database Systems, Vol. 13, No. 1, March 1933. Physical Database Design for Relational Databases l 93 -the workload on a database changes substantially, -new tables are added, -the database ... accepted July 1987 ACM Transactions on Database Systems, Vol. 13, No. 1, March 1988. Physical Database Design for Relational Databases 97 different physical data manager...

Ngày tải lên: 20/02/2014, 05:21

... for index, number of database records, and amount of overflow • Storage Efficiency depends on size of index and volatility of database Chapter 08: Physical Database Design Access Numeric ... (excluding cache) • Today: 512MB are common even on PCs • Many databases could fit in memory – New industry trend: Main Memory Database – E.g TimesTen • Main issue is volatility Modifica...

Ngày tải lên: 12/05/2014, 11:55

... Database design objectives ❑ Database design methods Grasping the Concept of a Database A database is a collection of information— preferably related information and preferably organized. A database ... of a database model ❑ The evolution of database modeling ❑ The hierarchical and network database models ❑ The relational database model ❑ The object and object-relational...

Ngày tải lên: 03/07/2014, 01:20

... multiple types of databases, using different database engines, perhaps even including legacy databases, and really any type of database that can be catered for with whichever database is being ... evolution of database models, how different applica- tions and end-user needs affect database type, the basics of the art of database design, plus various human factors influencing de...

Ngày tải lên: 03/07/2014, 01:20

... the extremes of normalization in a relational database. Extreme reduction in a relational database has the opposite effect to that of an object database where everything gets far to complex ... especially in a relational database. After all, a relational structure is not an object structure. Object structures become more simplistic as they are further reduced. Object database reduct...

Ngày tải lên: 03/07/2014, 01:20

... Databases A standby database is a failover database. A standby database has minimal activity, usually only adding new records, changing existing records, and deleting existing records. Some database ... creating software from a design of that software. A physical database is an implementation of a database model. Inactive data — Inactive data is information passed from an OLTP...

Ngày tải lên: 03/07/2014, 01:20

... warehouse database, 196 OLTP database, 194 read only reporting index, 208 read-only environments. See also data warehouse database analysis stage, 223 standby databases, 398 read-write databases, ... 222 defining in model design, 17–19 workplace database modeling, 24–25 object-relational database model described, 414 functional categories, 14 history, 7 object model and, 165 ODQL (Ob...

Ngày tải lên: 03/07/2014, 01:20

Ngày tải lên: 11/09/2012, 15:49

... the Logical Data Design Implementing Relationships Data Optimization Techniques Activity 6.2: Optimizing a Physical Data Design Module 6: Deriving a Physical Data Design Module 6: Deriving a Physical ... processing. 120 Module 6: Deriving a Physical Data Design ! !! ! Physical Data Design " Describing a Physical Data Model " Identifying Database...

Ngày tải lên: 18/10/2013, 19:15