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- TechTarget
- TechTarget

... Domino is a trademark of Lotus Development Corporation and/or IBM Corporation. C-bus is a trademark of Corollary, Inc. in the United States, other countries, or both. Java and all Java-based trademarks are trademarks of Sun Microsystems, Inc. in the United States, other countries, or both. Microsoft ...
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... Prior to creating a Physical Data Model it is advisable for you to set the default DBMS for the project. Setting a default DBMS ensures that all new database elements that are created on diagrams are automatically assigned the default DBMS. If the default DBMS is not set, new Tables are created with ...
What is data? Databases - Introduction
What is data? Databases - Introduction

Chapter 4: SQL - Yale University
Chapter 4: SQL - Yale University

... select distinct customer_name from borrower, loan where borrower.loan_number = loan.loan_number and branch_name = 'Perryridge' and (branch_name, customer_name ) in (select branch_name, customer_name from depositor, account where depositor.account_number = account.account_number ) ...
ch03-SQL
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... select distinct customer_name from borrower, loan where borrower.loan_number = loan.loan_number and branch_name = 'Perryridge' and (branch_name, customer_name ) in (select branch_name, customer_name from depositor, account where depositor.account_number = account.account_number ) ...
Data Sheet: Oracle Exadata Database Machine X6-2
Data Sheet: Oracle Exadata Database Machine X6-2

... Flash Cache) in front of disk storage since caching provides flash level performance for much more data than fits directly into flash. Exadata Smart Flash Cache automatically caches frequently accessed data while keeping infrequently accessed data on disk. This provides the performance of flash with ...
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Logging_or_Nologging.ppt - OracleNZ by Francisco Munoz Alvarez

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COSI 127b Introduction to Database Systems
COSI 127b Introduction to Database Systems

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... applications such as “time series”, “valid time history” and “transaction time history”. I have devoted much effort to the discovery and promulgation of those research results that claim to show that solutions to all of the problems we encounter in temporal databases are expressible in first order l ...
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... select distinct customer_name from borrower, loan where borrower.loan_number = loan.loan_number and branch_name = ‘Perryridge’ and (branch_name, customer_name ) in (select branch_name, customer_name from depositor, account where depositor.account_number = account.account_number ) ...
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Oracle Exadata Storage Expansion Rack X4
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... become crippled without completely failing leading to database hangs, poor performance, or even corruptions. Flash products have been seen to intermittently hang, exhibit periodic poor performance, or lose data during power cycles, and these failures often do not trigger errors or alerts that would ...
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Oracle Database Readme

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Concurrency control

In information technology and computer science, especially in the fields of computer programming, operating systems, multiprocessors, and databases, concurrency control ensures that correct results for concurrent operations are generated, while getting those results as quickly as possible.Computer systems, both software and hardware, consist of modules, or components. Each component is designed to operate correctly, i.e., to obey or to meet certain consistency rules. When components that operate concurrently interact by messaging or by sharing accessed data (in memory or storage), a certain component's consistency may be violated by another component. The general area of concurrency control provides rules, methods, design methodologies, and theories to maintain the consistency of components operating concurrently while interacting, and thus the consistency and correctness of the whole system. Introducing concurrency control into a system means applying operation constraints which typically result in some performance reduction. Operation consistency and correctness should be achieved with as good as possible efficiency, without reducing performance below reasonable levels. Concurrency control can require significant additional complexity and overhead in a concurrent algorithm compared to the simpler sequential algorithm.For example, a failure in concurrency control can result in data corruption from torn read or write operations.
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