Document
... Concurrency Control with Optimistic Methods • Optimistic approach ▫ Based on assumption that majority of database operations do not conflict ▫ Does not require locking or time stamping techniques ▫ Transaction is executed without restrictions until it is committed ▫ Phases are read, validation, and ...
... Concurrency Control with Optimistic Methods • Optimistic approach ▫ Based on assumption that majority of database operations do not conflict ▫ Does not require locking or time stamping techniques ▫ Transaction is executed without restrictions until it is committed ▫ Phases are read, validation, and ...
data warehouse architecture
... developer of the data warehouse is not usually in a position to change the quality of its underlying historic data, though a data warehousing project can put spotlight on the data quality issues and lead to improvements for the future. It is, therefore, usually necessary to go through the data enter ...
... developer of the data warehouse is not usually in a position to change the quality of its underlying historic data, though a data warehousing project can put spotlight on the data quality issues and lead to improvements for the future. It is, therefore, usually necessary to go through the data enter ...
We have finished the LONG to CLOB conversions in University of
... affecting those applications that do not use the table being converted. If you want to do the conversion when applications are live, you need to test it in test database and make sure it works for you. Otherwise, the conservative way, stop the application and restart the application servers, is reco ...
... affecting those applications that do not use the table being converted. If you want to do the conversion when applications are live, you need to test it in test database and make sure it works for you. Otherwise, the conservative way, stop the application and restart the application servers, is reco ...
E-Business Data Warehouse Design and Implementation
... data retained in the source system. It is common to move historical data that accumulates in an operational OLTP system to a data warehouse to maintain OLTP performance and efficiency. 3.2.2 Transform the data This phase is responsible for data validation, data accuracy, data type conversion, and bu ...
... data retained in the source system. It is common to move historical data that accumulates in an operational OLTP system to a data warehouse to maintain OLTP performance and efficiency. 3.2.2 Transform the data This phase is responsible for data validation, data accuracy, data type conversion, and bu ...
OLAP Technology in Data Warehouses
... combined, there is a lack of agreement on how these techniques should be categorized. For example, the Bayesian Approach may be logically grouped with Probabilistic Approaches, Classification Approaches, or Visualization Approaches. For the sake of organization, each approach described here is inclu ...
... combined, there is a lack of agreement on how these techniques should be categorized. For example, the Bayesian Approach may be logically grouped with Probabilistic Approaches, Classification Approaches, or Visualization Approaches. For the sake of organization, each approach described here is inclu ...
Extraction, Transformation, Loading (ETL) and Data Cleaning
... is a process of enterprise data warehouse where process data is transferred from one or many data sources to the data warehouse. This research paper discusses the problems of the ETL process and focuses on the cleaning problem of ETL. Extraction, Transformation and Loading is a very time consuming p ...
... is a process of enterprise data warehouse where process data is transferred from one or many data sources to the data warehouse. This research paper discusses the problems of the ETL process and focuses on the cleaning problem of ETL. Extraction, Transformation and Loading is a very time consuming p ...
Data Integration with Talend Open Studio Robert A. Nisbet, Ph.D.
... The left pane shows fields for the two input data sources (selectable by clicking on the appropriate tab). The right pane displays the selected fields from both files. By default, all fields from each file are selected. You can remove any input field from the output data structure by highlighting it ...
... The left pane shows fields for the two input data sources (selectable by clicking on the appropriate tab). The right pane displays the selected fields from both files. By default, all fields from each file are selected. You can remove any input field from the output data structure by highlighting it ...
OODB
... “No-locks” for optimistic locking. Users to define their own locks. Denies locks that would result in a deadlock. ...
... “No-locks” for optimistic locking. Users to define their own locks. Denies locks that would result in a deadlock. ...
INTRODUCTION OF 3D INFORMATION IN URBAN GIS : A CONCEPTUAL...
... user’s needs for 3D information ? Or is it the users who don’t know what 3D can give them ? Usually users don’t know their 3D needs. Even if 3D needs are expressed for some applications (for example the propagation of mobile phone signal), the most urban studies are still tackled in 2D. 3D informati ...
... user’s needs for 3D information ? Or is it the users who don’t know what 3D can give them ? Usually users don’t know their 3D needs. Even if 3D needs are expressed for some applications (for example the propagation of mobile phone signal), the most urban studies are still tackled in 2D. 3D informati ...
History of SQL
... The next revision was in 1992, and is known as SQL-92 or SQL 2. This was a major revision, and added more features to the language. The most important updates were more features related to DDL, data types, orthogonallity and set operations. These DDL features included alter and drop commands, both p ...
... The next revision was in 1992, and is known as SQL-92 or SQL 2. This was a major revision, and added more features to the language. The most important updates were more features related to DDL, data types, orthogonallity and set operations. These DDL features included alter and drop commands, both p ...
