The Research on OLAP for Educational Data Analysis
... performance of OLAPSystems OLAP systems continuously copies of data and different data sources are summarized removed, they will sort the data cubes.User can run query on this cube. Complex queries on OLAP systems require much less time than a similar search on OLTP Systems.OLAP is a set of hypothes ...
... performance of OLAPSystems OLAP systems continuously copies of data and different data sources are summarized removed, they will sort the data cubes.User can run query on this cube. Complex queries on OLAP systems require much less time than a similar search on OLTP Systems.OLAP is a set of hypothes ...
Translation of the data flow query language Free, Nancy C.
... predominant database models in use today. These are hierarchical. network, and relational database models. A fourth, and relatively new model. is the object-oriented database model. Finally, a fifth model is the functional model, often used in Artificial Intelligence programs. Each of these models h ...
... predominant database models in use today. These are hierarchical. network, and relational database models. A fourth, and relatively new model. is the object-oriented database model. Finally, a fifth model is the functional model, often used in Artificial Intelligence programs. Each of these models h ...
Relational model 9/27/11
... • Constraints → constraints BUT Not all ER constraints expressible in basic relational model ...
... • Constraints → constraints BUT Not all ER constraints expressible in basic relational model ...
Efficient, hot & automatic oracle database cloning
... • Utility: To copy files between two systems • Performs a block level comparison of two files • Transfers only modified blocks – huge benefit if you are transferring large files like dafafiles over a network link • Speeds up file transfers when the destination file already exists ...
... • Utility: To copy files between two systems • Performs a block level comparison of two files • Transfers only modified blocks – huge benefit if you are transferring large files like dafafiles over a network link • Speeds up file transfers when the destination file already exists ...
CS131 - Database Applications
... If any professor can teach this in your department, please write the name of your department ...
... If any professor can teach this in your department, please write the name of your department ...
Spinning the Structured Data Web
... This total time compares favorably to SOFTools 1.2d load time of 3.6 seconds using its native XML file format. XML files require additional parsing effort that relational databases do not, an important consideration. A less important performance parameter for many applications is the time required t ...
... This total time compares favorably to SOFTools 1.2d load time of 3.6 seconds using its native XML file format. XML files require additional parsing effort that relational databases do not, an important consideration. A less important performance parameter for many applications is the time required t ...
Document
... Relation Schema and Instance A1, A2, …, An are attributes R = (A1, A2, …, An ) is a relation schema ...
... Relation Schema and Instance A1, A2, …, An are attributes R = (A1, A2, …, An ) is a relation schema ...
The Business Case for Tokenization
... companies send their Point-Of-Sale transaction information to analytics service providers for trend and business analysis. The service provider identifies trends, spots potential problems with supply chains, and helps evaluate the effectiveness of promotions. In some cases, service providers consoli ...
... companies send their Point-Of-Sale transaction information to analytics service providers for trend and business analysis. The service provider identifies trends, spots potential problems with supply chains, and helps evaluate the effectiveness of promotions. In some cases, service providers consoli ...
Database design Database design Database design Database
... Logical design defines the database for some type of database management system, for example, for relational dbms. It considers how the data are represented using the structures offered by dbms: ...
... Logical design defines the database for some type of database management system, for example, for relational dbms. It considers how the data are represented using the structures offered by dbms: ...
Spatial and spatio-temporal data models for GIS
... (ADTs) and a query language from which these ADTs are callable – supports spatial indexing, efficient algorithms for processing spatial operations, and domain specific rules for query optimization • Example: Oracle Spatial data cartridge – can work with Oracle 8i DBMS – Has spatial data types (e.g. ...
... (ADTs) and a query language from which these ADTs are callable – supports spatial indexing, efficient algorithms for processing spatial operations, and domain specific rules for query optimization • Example: Oracle Spatial data cartridge – can work with Oracle 8i DBMS – Has spatial data types (e.g. ...
Database Security in an Enterprise Environment
... Support for fine-grain data security (e.g. multiple clients can have data in same schema without knowing other data is there) Use of VPDs to achieve row-level security, controlled from Policy Manager tool under Enterprise Manager ...
... Support for fine-grain data security (e.g. multiple clients can have data in same schema without knowing other data is there) Use of VPDs to achieve row-level security, controlled from Policy Manager tool under Enterprise Manager ...
Design and Generate SQL Server Database
... Select Entity from the diagram toolbar. Then click on the diagram to create an entity. Name it as Item and press Enter to confirm editing. ...
... Select Entity from the diagram toolbar. Then click on the diagram to create an entity. Name it as Item and press Enter to confirm editing. ...
Data Entities
... Two types of keys often used in master and transaction file records are a primary key and one or more secondary keys. A Primary key (also called a record key) is the attribute that uniquely identifies a specific record. They are usually of numeric or alphanumeric modes, e.g., customer number. A Seco ...
... Two types of keys often used in master and transaction file records are a primary key and one or more secondary keys. A Primary key (also called a record key) is the attribute that uniquely identifies a specific record. They are usually of numeric or alphanumeric modes, e.g., customer number. A Seco ...
security of database systems - Computer Science and Engineering
... INSERT and UPDATE privileges can specify that only certain attributes of R can be updated by the account. REFERENCES privilege on R: This gives the account the capability to reference the relation R when specifying integrity constraints. This privilege can also be restricted to specific attributes ...
... INSERT and UPDATE privileges can specify that only certain attributes of R can be updated by the account. REFERENCES privilege on R: This gives the account the capability to reference the relation R when specifying integrity constraints. This privilege can also be restricted to specific attributes ...
Supported Operating Systems, Databases and Associated Drivers
... Installed with MDAC 2.7 – available on HelpDesk CD if required. ...
... Installed with MDAC 2.7 – available on HelpDesk CD if required. ...
Metadata
... This new model allowed for drawing a line only once For example: • If two polygons shared a side, that shared side would have to be traced when both polygons were drawn • This would allow for the possibility of gaps or slivers between the individual lines (topological error) • The new system avoided ...
... This new model allowed for drawing a line only once For example: • If two polygons shared a side, that shared side would have to be traced when both polygons were drawn • This would allow for the possibility of gaps or slivers between the individual lines (topological error) • The new system avoided ...
Database Design Examples
... 3 ways: hierarchical, network, relational Apply relational model Uses RA (relational algebra) as a formal query language ...
... 3 ways: hierarchical, network, relational Apply relational model Uses RA (relational algebra) as a formal query language ...
Cloning - PeopleSoft Technology SIG
... Validate parameters (target not production) Blackout the target database using emctl Bounce the target database Attempt to perform an archivelog change Create the command line Run the script Check the log for errors and email results End the blackout ...
... Validate parameters (target not production) Blackout the target database using emctl Bounce the target database Attempt to perform an archivelog change Create the command line Run the script Check the log for errors and email results End the blackout ...
Document
... Zero-configuration - no setup or administration needed. Implements most of SQL92. A complete database is stored in a single disk file. Database files can be freely shared between machines with different byte orders. Supports databases up to 2 terabytes (241 bytes) in size. Sizes of strings and BLOBs ...
... Zero-configuration - no setup or administration needed. Implements most of SQL92. A complete database is stored in a single disk file. Database files can be freely shared between machines with different byte orders. Supports databases up to 2 terabytes (241 bytes) in size. Sizes of strings and BLOBs ...
UNLOADing Data from Informix
... Streaming millions of records from numerous database nodes back to the SAS node for sequential writing to disk is a slow process. Performance is degraded further when there are other users doing the same thing. To solve this problem, we can use a SAS macro that takes advantage of Informix's Pload ut ...
... Streaming millions of records from numerous database nodes back to the SAS node for sequential writing to disk is a slow process. Performance is degraded further when there are other users doing the same thing. To solve this problem, we can use a SAS macro that takes advantage of Informix's Pload ut ...
Database model
A database model is a type of data model that determines the logical structure of a database and fundamentally determines in which manner data can be stored, organized, and manipulated. The most popular example of a database model is the relational model, which uses a table-based format.