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Comparing the Performance of NoSQL Approaches for Managing Archetype-Based
... data from an EHR of a single patient, and also for OLAP analysis. In addition they should allow population-based ad hoc queries, that is, queries that are not planned in advance, thus having no query-specific indexing optimizations, or whose results could not be easily retrieved from a data warehous ...
... data from an EHR of a single patient, and also for OLAP analysis. In addition they should allow population-based ad hoc queries, that is, queries that are not planned in advance, thus having no query-specific indexing optimizations, or whose results could not be easily retrieved from a data warehous ...
Retrieving Data from a Database
... Retrieving Data from a Database The topic of the last hour was data access basics. You learned about the basics of the ADO object model, and you created an ODBC data source, which was then used in the Active Server Pages (ASP) example to retrieve data from the Northwind database. However, you have t ...
... Retrieving Data from a Database The topic of the last hour was data access basics. You learned about the basics of the ADO object model, and you created an ODBC data source, which was then used in the Active Server Pages (ASP) example to retrieve data from the Northwind database. However, you have t ...
Formulating Queries 1
... • OLE object - fields that may be linked to an object, such as a picture or a document • Hyperlink - fields linked to other objects, Web pages, or documents that appear when the field when the field is clicked. • Lookup Wizard - fields that enable you to access a value from a table or list of values ...
... • OLE object - fields that may be linked to an object, such as a picture or a document • Hyperlink - fields linked to other objects, Web pages, or documents that appear when the field when the field is clicked. • Lookup Wizard - fields that enable you to access a value from a table or list of values ...
AUTO CARTO 9 Ninth International Symposium on
... is written with the Data Definition Language (DDL) of a DBMS or with standard programming languages such as PASCAL FORTRAN or COBOL. Thus, the internal schema depends upon the software or language used for the implementation of the information system. This data model is written in a more complex lan ...
... is written with the Data Definition Language (DDL) of a DBMS or with standard programming languages such as PASCAL FORTRAN or COBOL. Thus, the internal schema depends upon the software or language used for the implementation of the information system. This data model is written in a more complex lan ...
Working Conference on Reverse Engineering
... Process L4 : the schema is restructured to match design criteria such as access time. This restructuring depends on the specific behaviour of the DMS. Just like process L2, it makes the schema less readable. The semantic contents of the DMS-compliant structure are preserved. Process P1 : only the fi ...
... Process L4 : the schema is restructured to match design criteria such as access time. This restructuring depends on the specific behaviour of the DMS. Just like process L2, it makes the schema less readable. The semantic contents of the DMS-compliant structure are preserved. Process P1 : only the fi ...
Consistent Query Answering: Five Easy Pieces
... Computing Consistent Query Answers Query Rewriting Given a query Q and a set of integrity constraints IC , build a query Q IC such that for every database instance D the set of answers to Q IC in D = the set of consistent answers to Q in D w.r.t. IC . ...
... Computing Consistent Query Answers Query Rewriting Given a query Q and a set of integrity constraints IC , build a query Q IC such that for every database instance D the set of answers to Q IC in D = the set of consistent answers to Q in D w.r.t. IC . ...
ppt
... Main-Memory Database Optimizations To reduce space overheads, main-memory databases can use ...
... Main-Memory Database Optimizations To reduce space overheads, main-memory databases can use ...
Chapter Notes
... to create a proxy user called APP_PROXY that will be assigned to all application role and will work on behalf of the application user APP_USER to gain access to all tables owned by the application owner called APP_OWNER. So we need to create the users, roles, and tables for this application. Securit ...
... to create a proxy user called APP_PROXY that will be assigned to all application role and will work on behalf of the application user APP_USER to gain access to all tables owned by the application owner called APP_OWNER. So we need to create the users, roles, and tables for this application. Securit ...
Dimensions of Database Quality
... While data quality has been the focus of a substantial amount of research, a standard definition does not exist in the literature (Wang & Madnick, 2000). The International Organization for Standardization (ISO) supplies an acceptable definition of data quality using accepted terminology from the qua ...
... While data quality has been the focus of a substantial amount of research, a standard definition does not exist in the literature (Wang & Madnick, 2000). The International Organization for Standardization (ISO) supplies an acceptable definition of data quality using accepted terminology from the qua ...
relational calculus
... The language called QBE (Query-By-Example) that is related to domain calculus was developed almost concurrently to SQL at IBM Research, Yorktown Heights, New York. Domain calculus was thought of as a way to explain what QBE does. ...
... The language called QBE (Query-By-Example) that is related to domain calculus was developed almost concurrently to SQL at IBM Research, Yorktown Heights, New York. Domain calculus was thought of as a way to explain what QBE does. ...
Databases
... design, implementation, maintenance and repair of an organization's database. The role includes the development and design of database strategies, monitoring and improving database performance and capacity, and planning for future expansion requirements. They may also plan, co-ordinate and implement ...
... design, implementation, maintenance and repair of an organization's database. The role includes the development and design of database strategies, monitoring and improving database performance and capacity, and planning for future expansion requirements. They may also plan, co-ordinate and implement ...
Getting Started with Databases
... Provide a username and password you’ll remember (generally, these won’t be used again, ever) Note the stoplight now on taskbar at bottom right MySQL’s database server now starts upon bootup ...
... Provide a username and password you’ll remember (generally, these won’t be used again, ever) Note the stoplight now on taskbar at bottom right MySQL’s database server now starts upon bootup ...
JDBC - WordPress.com
... API. You develop your application code to the JDBC API and you can connected to various databases. • JDBC supported a large number of databases – Oracle, Microsoft SQL server, MySQL, SyBase, DB2, PostgreSQL … ...
... API. You develop your application code to the JDBC API and you can connected to various databases. • JDBC supported a large number of databases – Oracle, Microsoft SQL server, MySQL, SyBase, DB2, PostgreSQL … ...
Temporal Relational Calculus
... where RjDB is the interpretation of the predicate symbol Rj in the database DB. The answer to a query Q over DB is the set Q(DB) of valuations that make Q true in DB. Namely, Q(DB) := {θ|F V (Q) : DB, θ |= Q} where θ|F V (Q) is the restriction of the valuation θ to the free variables of Q. In many c ...
... where RjDB is the interpretation of the predicate symbol Rj in the database DB. The answer to a query Q over DB is the set Q(DB) of valuations that make Q true in DB. Namely, Q(DB) := {θ|F V (Q) : DB, θ |= Q} where θ|F V (Q) is the restriction of the valuation θ to the free variables of Q. In many c ...
Data Base Design for Decision Support Systems
... duplicating storage of variable values (in several datasets or as repeating values in one dataset) requires extra storage and processing time. However, suc~ duplication can make the database easier to use and provide increased opportunity for subsetting the data. This adaptability permits creation o ...
... duplicating storage of variable values (in several datasets or as repeating values in one dataset) requires extra storage and processing time. However, suc~ duplication can make the database easier to use and provide increased opportunity for subsetting the data. This adaptability permits creation o ...
Database Management Systems Course Content Example for
... – if samples are all of the same class C, then return N as a leaf node labeled with C. – if attribute-list is empty then return N as a leaf node labeled with the most common class. ...
... – if samples are all of the same class C, then return N as a leaf node labeled with C. – if attribute-list is empty then return N as a leaf node labeled with the most common class. ...
The design of the force.com multitenant internet
... Force.com’s optimized metadata-driven architecture delivers extraordinary performance, scalability, and customization for ondemand, multitenant applications. In Force.com, everything exposed to developers and application users is internally represented as metadata. Forms, reports, work flows, user a ...
... Force.com’s optimized metadata-driven architecture delivers extraordinary performance, scalability, and customization for ondemand, multitenant applications. In Force.com, everything exposed to developers and application users is internally represented as metadata. Forms, reports, work flows, user a ...
Chapter 14: Concurrency Control
... The protocol assures serializability. It can be proved that the ...
... The protocol assures serializability. It can be proved that the ...
Manage Your Cluster Without Its Managing You
... Workload Repository Statistics Created and managed with existing tools ...
... Workload Repository Statistics Created and managed with existing tools ...
Microsoft SQL Server 2005 Database Mirroring
... To prepare for the Database Mirroring session, the database that will end up being the Mirror needs to be brought to a point that is transactionaly close to the Principal. It does not have to be to the exact point, but the closer it is, the quicker the mirror will get to the synchronized state. For ...
... To prepare for the Database Mirroring session, the database that will end up being the Mirror needs to be brought to a point that is transactionaly close to the Principal. It does not have to be to the exact point, but the closer it is, the quicker the mirror will get to the synchronized state. For ...
Chapter 09 Presentation
... – Locks are obtained throughout the transaction – No lock is released until the COMMIT or ROLLBACK command is issued – This strategy is more restrictive but easier to implement than two-phase locking Copyright © 2004 Database Processing: Fundamentals, Design, and Implementation, 9/e by David M. Kroe ...
... – Locks are obtained throughout the transaction – No lock is released until the COMMIT or ROLLBACK command is issued – This strategy is more restrictive but easier to implement than two-phase locking Copyright © 2004 Database Processing: Fundamentals, Design, and Implementation, 9/e by David M. Kroe ...
XML
... • The environment aims at providing automatic configuration of query actions associated with presentation of template. • The design of the template presentation must be tightly coupled with the arrangement of document data stored in the repository. • The component in the design of presentation must ...
... • The environment aims at providing automatic configuration of query actions associated with presentation of template. • The design of the template presentation must be tightly coupled with the arrangement of document data stored in the repository. • The component in the design of presentation must ...
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... GUIDELINE 2: Design a schema that does not suffer from the insertion, deletion and update anomalies. If there are any present, then note them so that applications can be made to take them into account 1.3 Null Values in Tuples GUIDELINE 3: Relations should be designed such that their tuples will hav ...
... GUIDELINE 2: Design a schema that does not suffer from the insertion, deletion and update anomalies. If there are any present, then note them so that applications can be made to take them into account 1.3 Null Values in Tuples GUIDELINE 3: Relations should be designed such that their tuples will hav ...
Versant Object Database
![](https://commons.wikimedia.org/wiki/Special:FilePath/Versant_logo_2007.png?width=300)
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.