Document
... a) Find exact answer from candidate set using exact geometry – CPU intensive C. Choice of building blocks (depends on vendors), representative building blocks Each building block has a few strategies!! 1) Point query: return a spatial object that contains the query point from a table. Pointing one l ...
... a) Find exact answer from candidate set using exact geometry – CPU intensive C. Choice of building blocks (depends on vendors), representative building blocks Each building block has a few strategies!! 1) Point query: return a spatial object that contains the query point from a table. Pointing one l ...
Querying XML Views of Relational Data
... ? ----> XML Document • XML View can be applied to any kind of data source such as Relational databases. • XML view allows us to query the database as if it were storing XML. We query the database by querying the XML view, to get at the end…. An XML document. ...
... ? ----> XML Document • XML View can be applied to any kind of data source such as Relational databases. • XML view allows us to query the database as if it were storing XML. We query the database by querying the XML view, to get at the end…. An XML document. ...
Automatic Conflict Resolution to Integrate Relational Databases
... efficiently and automatically No wrapper or mediator software is required Transparent querying - users issue semantic queries which are translated to SQL by the query processor Page 31 ...
... efficiently and automatically No wrapper or mediator software is required Transparent querying - users issue semantic queries which are translated to SQL by the query processor Page 31 ...
DBSJ Journal論文のスタイルファイル(MS Word版)
... two variations for the new query. The first one, called probabilistic nearest neighbor query [15], utilizes a probability threshold to define qualifying objects in a similar way as the range query. The second one, called expected nearest neighbor search, identifies objects based on their expected di ...
... two variations for the new query. The first one, called probabilistic nearest neighbor query [15], utilizes a probability threshold to define qualifying objects in a similar way as the range query. The second one, called expected nearest neighbor search, identifies objects based on their expected di ...
GIS and Remote Sensing in Water Resources Management
... non redundancy ; any key attribute selected and tabulated should keep the key's uniqueness. e.g. address can not be dropped from telephone address, because there may be many with the same names. Prime attribute : an attribute listed in at least one key. The most important point of the relational dat ...
... non redundancy ; any key attribute selected and tabulated should keep the key's uniqueness. e.g. address can not be dropped from telephone address, because there may be many with the same names. Prime attribute : an attribute listed in at least one key. The most important point of the relational dat ...
Basic_Oracle_Architecture
... Large Pool • An optional area of memory in the SGA • Relieves the burden place on the Shared Pool • Used for: – Session memory for the Shared Server – I/O server processes – Backup and restore operations for RMAN ...
... Large Pool • An optional area of memory in the SGA • Relieves the burden place on the Shared Pool • Used for: – Session memory for the Shared Server – I/O server processes – Backup and restore operations for RMAN ...
Object-Oriented Databases - School of Information Technology
... system and their interaction with application programs, users, and database administrators Object-Oriented Analysis and Design with the Unified Process ...
... system and their interaction with application programs, users, and database administrators Object-Oriented Analysis and Design with the Unified Process ...
Parallel Query Processing
... timing constraints between operators e.g. hash table must be built completely before probing ...
... timing constraints between operators e.g. hash table must be built completely before probing ...
distributed databases and client-server
... autonomous centralized DBMS that has its own local users, local transaction, and DBA and hence has a very high degree of local autonomy. Used when there is some global view of databases shared by applications. ...
... autonomous centralized DBMS that has its own local users, local transaction, and DBA and hence has a very high degree of local autonomy. Used when there is some global view of databases shared by applications. ...
Document
... Both operations must be idempotent That is, even if the operation is executed multiple times the effect is the same as if it is executed once Needed since operations may get re-executed during recovery When recovering after failure: Transaction Ti needs to be undone if the log contains the r ...
... Both operations must be idempotent That is, even if the operation is executed multiple times the effect is the same as if it is executed once Needed since operations may get re-executed during recovery When recovering after failure: Transaction Ti needs to be undone if the log contains the r ...
Entity Framework
... To add navigation properties to the POCO classes, add a property with the type of the other table. To specify navigation property to a single entity in the other table specify a property with this type. To specify a navigation property to a collection of entities in the other table, specify a prope ...
... To add navigation properties to the POCO classes, add a property with the type of the other table. To specify navigation property to a single entity in the other table specify a property with this type. To specify a navigation property to a collection of entities in the other table, specify a prope ...
DAMA0107 Object Storage - DAMA-MN
... The Chicago Stock Exchange uses the Versant ODBMS for its trading system in the middle tier. The trading system stores data at the end of the trading day in Oracle for running existing back-office programs. There is a description of the trading system along with architectural diagrams at www.howstev ...
... The Chicago Stock Exchange uses the Versant ODBMS for its trading system in the middle tier. The trading system stores data at the end of the trading day in Oracle for running existing back-office programs. There is a description of the trading system along with architectural diagrams at www.howstev ...
Relational Algebra
... Schemas of input relations for a query are fixed (but the query can be run on many different instances) The schema for the result of a given query is also fixed, and the output instance is determined by definition of query language constructs. ...
... Schemas of input relations for a query are fixed (but the query can be run on many different instances) The schema for the result of a given query is also fixed, and the output instance is determined by definition of query language constructs. ...
manage your transaction traffic and lower your costs
... DHISCO conveniently expires the corresponding transactions in the cache • DHISCO Cache automatically and accurately deletes cache records, clearing space for new cache records and efficient processing • Suppliers are able to configure the stale times for cached transactions based on criteria such ...
... DHISCO conveniently expires the corresponding transactions in the cache • DHISCO Cache automatically and accurately deletes cache records, clearing space for new cache records and efficient processing • Suppliers are able to configure the stale times for cached transactions based on criteria such ...
Paper
... XQuery can be used as a query language for object relational databases. If an objectrelational mapping is used, hierarchies of tables are treated as a single document and joins are specified in the mapping (=> no need to explicitly specify the joins inside the query). With XPath, an object-relationa ...
... XQuery can be used as a query language for object relational databases. If an objectrelational mapping is used, hierarchies of tables are treated as a single document and joins are specified in the mapping (=> no need to explicitly specify the joins inside the query). With XPath, an object-relationa ...
Essig Museum Inventory and Loans Database
... Data can be entered and changed (changes will propagate through the underlying tables) Queries can also be used to append one table to another, update records given certain criteria, or make new tables for exporting as spreadsheets or ...
... Data can be entered and changed (changes will propagate through the underlying tables) Queries can also be used to append one table to another, update records given certain criteria, or make new tables for exporting as spreadsheets or ...
SSSS - Computer Science
... The current page table entry is modified to point to the new disk block. For pages updated by the transaction, two versions are kept. The old version is referenced by the shadow page table, and the new version by the current page table. To recover from failure during transaction execution, it is suf ...
... The current page table entry is modified to point to the new disk block. For pages updated by the transaction, two versions are kept. The old version is referenced by the shadow page table, and the new version by the current page table. To recover from failure during transaction execution, it is suf ...
Chapter 1
... - Approaches to using JDBC outside the Web - JDBC is a Java API for database access - The API is defined in java.sql (part of Java ...
... - Approaches to using JDBC outside the Web - JDBC is a Java API for database access - The API is defined in java.sql (part of Java ...
Chapter 21:Application Development and Administration
... Apparent saving of number of disks by RAID 5 (by using parity, as opposed to the mirroring done by RAID 1) may be illusory! ...
... Apparent saving of number of disks by RAID 5 (by using parity, as opposed to the mirroring done by RAID 1) may be illusory! ...
A Security Checklist for Oracle9i
... data are of pivotal importance in any business. Oracle9i comprehensively addresses the need for information security by offering cutting-edge security features such as deep data protection, auditing, scaleable security, secure hosting and data exchange. The Oracle9i database server leads the industr ...
... data are of pivotal importance in any business. Oracle9i comprehensively addresses the need for information security by offering cutting-edge security features such as deep data protection, auditing, scaleable security, secure hosting and data exchange. The Oracle9i database server leads the industr ...
eXtensible Relational Databases
... query-driven dynamic mediated schema creation. The extension relies on the basic observation that, when applied to metadata consisting of relation and attribute names, the result of a query are tuples that represent a set of virtual mediated schemas from which source-specific queries can be construc ...
... query-driven dynamic mediated schema creation. The extension relies on the basic observation that, when applied to metadata consisting of relation and attribute names, the result of a query are tuples that represent a set of virtual mediated schemas from which source-specific queries can be construc ...
Transactional Replication
... Upgrade: Merge Replication Snapshot must be executed after setup Upgrade order ...
... Upgrade: Merge Replication Snapshot must be executed after setup Upgrade order ...
Symfony2 Tutorial
... After a model update the model notifies its associated views and controllers, so that the views can produce updated output, and the controllers to change the available set of commands A view requests from the model information needed to generate an output representation ...
... After a model update the model notifies its associated views and controllers, so that the views can produce updated output, and the controllers to change the available set of commands A view requests from the model information needed to generate an output representation ...
Transaction manager
... (a) If two transactions only read a data item, they do not conflict and order is not important. (b) If two transactions either read or write completely separate data items, they do not conflict and order is not important. (c) If one transaction writes a data item and another reads or writes same dat ...
... (a) If two transactions only read a data item, they do not conflict and order is not important. (b) If two transactions either read or write completely separate data items, they do not conflict and order is not important. (c) If one transaction writes a data item and another reads or writes same dat ...
Versant Object Database
Versant Object Database (VOD) is an object database software product developed by Versant Corporation.The Versant Object Database enables developers using object oriented languages to transactionally store their information by allowing the respective language to act as the Data Definition Language (DDL) for the database. In other words, the memory model is the database schema model.In general, persistence in VOD in implemented by declaring a list of classes, then providing a transaction demarcation application programming interface to use cases. Respective language integrations adhere to the constructs of that language, including syntactic and directive sugars.Additional APIs exist, beyond simple transaction demarcation, providing for the more advanced capabilities necessary to address practical issues found when dealing with performance optimization and scalability for systems with large amounts of data, many concurrent users, network latency, disk bottlenecks, etc.