MulTe: A Multi-Tenancy Database Benchmark
... to be considered when a benchmark is designed. A single, classic performance metric, like transactions executed per second, is valid for peak performance evaluations and hence can be used for the ScalabilityBenchmark and the FairnessBenchmark. However, it is not sufficient to answer the question of ...
... to be considered when a benchmark is designed. A single, classic performance metric, like transactions executed per second, is valid for peak performance evaluations and hence can be used for the ScalabilityBenchmark and the FairnessBenchmark. However, it is not sufficient to answer the question of ...
Chapter 3: Relational Model Example of a Relation
... r ÷ s = ∏R-S (r) –∏R-S ( (∏R-S (r) x s) – ∏R-S,S(r)) To see why + ∏R-S,S(r) simply reorders attributes of r + ∏R-S(∏R-S (r) x s) – ∏R-S,S(r)) gives those tuples t in ∏R-S (r) such that for some tuple u ∈ s, tu ∉ r. ...
... r ÷ s = ∏R-S (r) –∏R-S ( (∏R-S (r) x s) – ∏R-S,S(r)) To see why + ∏R-S,S(r) simply reorders attributes of r + ∏R-S(∏R-S (r) x s) – ∏R-S,S(r)) gives those tuples t in ∏R-S (r) such that for some tuple u ∈ s, tu ∉ r. ...
Hibernate Interview Questions
... The configuration files hibernate.cfg.xml (or hibernate.properties) and mapping files *.hbm.xml are used by the Configuration class to create (i.e. configure and bootstrap hibernate) the SessionFactory, which in turn creates the Session instances. Session instances are the primary interface for the ...
... The configuration files hibernate.cfg.xml (or hibernate.properties) and mapping files *.hbm.xml are used by the Configuration class to create (i.e. configure and bootstrap hibernate) the SessionFactory, which in turn creates the Session instances. Session instances are the primary interface for the ...
DB2 Web Adapter for Microsoft SQL Server
... Mapping Microsoft SQL Table Comments Into a Synonym Access File Keywords Managing Synonyms Synonyms define unique names (or aliases) for each Microsoft SQL Server table or view that is accessible from the server. Synonyms are useful because they hide the underlying data source location and identity ...
... Mapping Microsoft SQL Table Comments Into a Synonym Access File Keywords Managing Synonyms Synonyms define unique names (or aliases) for each Microsoft SQL Server table or view that is accessible from the server. Synonyms are useful because they hide the underlying data source location and identity ...
Red paper WebSphere Business Process Management
... express or implied warranties in certain transactions, therefore, this statement may not apply to you. This information could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these changes will be incorporated in new editions of the pub ...
... express or implied warranties in certain transactions, therefore, this statement may not apply to you. This information could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these changes will be incorporated in new editions of the pub ...
DB2 Command Line Processor Commands - McGraw-Hill
... existing databases on the system. The add node operation creates an empty database partition on the new node for every database that exists in the instance. The configuration parameters for the new database partitions are set to the default value. If an add node operation fails while creating a data ...
... existing databases on the system. The add node operation creates an empty database partition on the new node for every database that exists in the instance. The configuration parameters for the new database partitions are set to the default value. If an add node operation fails while creating a data ...
Performance investigation into selected object persistence stores
... Designs of such applications are often divided into logical ...
... Designs of such applications are often divided into logical ...
E - Read
... customer-name ((branch-city = “Brooklyn” (branch)) account depositor) Could compute account depositor first, and join result with branch-city = “Brooklyn” (branch) , but account depositor is likely to be a large relation. Since it is more likely that only a small fraction of the bank’s customers ...
... customer-name ((branch-city = “Brooklyn” (branch)) account depositor) Could compute account depositor first, and join result with branch-city = “Brooklyn” (branch) , but account depositor is likely to be a large relation. Since it is more likely that only a small fraction of the bank’s customers ...
How To Handle Missing Information Without Using NULL
... per year”, doesn’t really apply to every row of EARNS. Might try something like this: Either the person identified by Id earns Salary pounds per year, or we don’t know what the person identified by Id earns, or the person identified by Id doesn’t have a salary. ...
... per year”, doesn’t really apply to every row of EARNS. Might try something like this: Either the person identified by Id earns Salary pounds per year, or we don’t know what the person identified by Id earns, or the person identified by Id doesn’t have a salary. ...
Microsoft SQL Server I/O Basics
... to avoid SQL Server and overall system stability problems and data loss. Obtain assistance from your I/O vendor if you encounter retries. DBCC Page Auditing DBCC page auditing is the process of executing common DBCC consistency checks as pages are read from disk. Time of Last Access The time of last ...
... to avoid SQL Server and overall system stability problems and data loss. Obtain assistance from your I/O vendor if you encounter retries. DBCC Page Auditing DBCC page auditing is the process of executing common DBCC consistency checks as pages are read from disk. Time of Last Access The time of last ...
Oracle Essbase Spreadsheet Add-in User`s Guide
... Copyright © 1991, 2008, Oracle and/or its affiliates. All rights reserved. Authors: EPM Information Development Team This software and related documentation are provided under a license agreement containing restrictions on use and disclosure and are protected by intellectual property laws. Except as ...
... Copyright © 1991, 2008, Oracle and/or its affiliates. All rights reserved. Authors: EPM Information Development Team This software and related documentation are provided under a license agreement containing restrictions on use and disclosure and are protected by intellectual property laws. Except as ...
User Reference Guide
... To import tables or views from a VSAM text file import specification - MVS-OS/390 ....................... 228 To import tables or views from a VSAM text file import specification-VSE ....................................... 229 CONNX and IMS ........................................................... ...
... To import tables or views from a VSAM text file import specification - MVS-OS/390 ....................... 228 To import tables or views from a VSAM text file import specification-VSE ....................................... 229 CONNX and IMS ........................................................... ...
SQL Server 2012 T-SQL Recipes: A Problem
... Please remember that, as good practice, it is better to reference the columns you want to retrieve explicitly instead of using SELECT *. If you write an application that uses SELECT *, your application may expect the same columns (in the same order) from the query. If later on you add a new column t ...
... Please remember that, as good practice, it is better to reference the columns you want to retrieve explicitly instead of using SELECT *. If you write an application that uses SELECT *, your application may expect the same columns (in the same order) from the query. If later on you add a new column t ...
An Overview of Production Rules in Database Systems
... into hierarchies, so that classes inherit structure and methods from their ancestors. In both relational and object-oriented database systems, database operations (queries and modi cations) are issued either directly by users or, more commonly, by application programs. Operations typically are group ...
... into hierarchies, so that classes inherit structure and methods from their ancestors. In both relational and object-oriented database systems, database operations (queries and modi cations) are issued either directly by users or, more commonly, by application programs. Operations typically are group ...
Chapter 2: Relational Model - Internet Database Lab.
... covers other relational languages, including the relational calculus, QBE and Datalog. The chapters in this part describe data manipulation: queries, updates, insertions, and deletions, assuming a schema design has been provided. Schema design issues are deferred to Part 2. ...
... covers other relational languages, including the relational calculus, QBE and Datalog. The chapters in this part describe data manipulation: queries, updates, insertions, and deletions, assuming a schema design has been provided. Schema design issues are deferred to Part 2. ...
Practical Relational Database Design
... » For each regular binary 1:N relationship type R, identify the relation S that represent the participating entity type at the N-side of the relationship type. » Include as foreign key in S the primary key of the relation T that represents the other entity type participating in R. » Include any simp ...
... » For each regular binary 1:N relationship type R, identify the relation S that represent the participating entity type at the N-side of the relationship type. » Include as foreign key in S the primary key of the relation T that represents the other entity type participating in R. » Include any simp ...
Querying XML Database Using Relational Database System
... XPath – A language for navigating within XML documents XSLT – an XML transformation language XQuery – a general purpose XML query language ...
... XPath – A language for navigating within XML documents XSLT – an XML transformation language XQuery – a general purpose XML query language ...
XML Publishing - Computer Science, NMSU
... XML Publishing is the task of transforming the relational data into XML, for the purpose of exchange over the Internet. More specifically, publishing XML data involves joining tables, selecting and projecting the data that needs to be exported, creating XML hierarchies; and processing values in an a ...
... XML Publishing is the task of transforming the relational data into XML, for the purpose of exchange over the Internet. More specifically, publishing XML data involves joining tables, selecting and projecting the data that needs to be exported, creating XML hierarchies; and processing values in an a ...
Unle ashing the Full Potenti alof the ORA CL E DBMS byLever
... apart from literals. I recommend reading the section Top Ten Mistakes Found in Oracle Systems on page 3–4 of Oracle Database Performance Tuning Guide 10g Release 2 before beginning design and coding of an application. While bind variables are mandatory to achieve scalability in high volume transacti ...
... apart from literals. I recommend reading the section Top Ten Mistakes Found in Oracle Systems on page 3–4 of Oracle Database Performance Tuning Guide 10g Release 2 before beginning design and coding of an application. While bind variables are mandatory to achieve scalability in high volume transacti ...
Data Sheet: Oracle Exadata Database Machine X4-8
... Flash Cache) in front of disk since caching provides flash level performance for much more data than fits directly into flash. The Exadata Smart Flash Cache automatically caches frequently accessed data while keeping infrequently accessed data on disk drives. This provides the performance of flash w ...
... Flash Cache) in front of disk since caching provides flash level performance for much more data than fits directly into flash. The Exadata Smart Flash Cache automatically caches frequently accessed data while keeping infrequently accessed data on disk drives. This provides the performance of flash w ...
Oracle Database Licensing Information
... The Programs are not intended for use in any nuclear, aviation, mass transit, medical, or other inherently dangerous applications. It shall be the licensee's responsibility to take all appropriate fail-safe, backup, redundancy and other measures to ensure the safe use of such applications if the Pro ...
... The Programs are not intended for use in any nuclear, aviation, mass transit, medical, or other inherently dangerous applications. It shall be the licensee's responsibility to take all appropriate fail-safe, backup, redundancy and other measures to ensure the safe use of such applications if the Pro ...
Enabling the Temporal Data Warehouse
... > In general, SQL requests are more succinct and therefore more easily understood than in previous versions. This offers greater opportunity for simplifying semantic layer design by reducing the amount of SQL required for temporal navigation. ...
... > In general, SQL requests are more succinct and therefore more easily understood than in previous versions. This offers greater opportunity for simplifying semantic layer design by reducing the amount of SQL required for temporal navigation. ...
Slide 1
... SQL Server 2005 Express Edition Freely distributable lightweight edition of SQL Server 2005 has limitations, but can be used for development and to embed in applications SQL Server 2005 Compact Edition The lightweight mobile version of SQL Server 2005 database engine ...
... SQL Server 2005 Express Edition Freely distributable lightweight edition of SQL Server 2005 has limitations, but can be used for development and to embed in applications SQL Server 2005 Compact Edition The lightweight mobile version of SQL Server 2005 database engine ...
SQL Server - Toolbox.com
... Copying, selling, duplication or reproduction of this work is expressly forbidden without the copyright holder’s written consent. All scripts and examples are used at your own risk. The author does not assume any liability for errors or omissions anywhere in this ebook. Always backup before performi ...
... Copying, selling, duplication or reproduction of this work is expressly forbidden without the copyright holder’s written consent. All scripts and examples are used at your own risk. The author does not assume any liability for errors or omissions anywhere in this ebook. Always backup before performi ...