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Document
Document

... inserting, updating, and deleting rows in a table, creating, replacing, altering, and dropping objects, ...
Oracle DBA Checklists
Oracle DBA Checklists

cse103day25
cse103day25

... Change the addmovie_handler.php page to also add the genre information to the database. – Assign the autonumber ID (created when title and year are added to tbl_Movies) to a variable. – Use that variable in constructing a query to add the movieID and the submitted genre info (and rank 1) to ...
Migration Guide - Information Products
Migration Guide - Information Products

... affiliates in the United States and other countries. Adaptec and SCSISelect are trademarks or registered trademarks of Adaptec, Inc. AMD Opteron and Opteron are trademarks of Advanced Micro Devices, Inc. Apache, Apache Avro, Apache Hadoop, Apache Hive, Hadoop, and the yellow elephant logo are either ...
chapter 7_ database administration
chapter 7_ database administration

... Most DBMSs support the creation of views. A view is a program’s or an individual user’s picture of the database. The existing, permanent tables in a relational database are called base tables. A view is a derived table because the data in it comes from one or more base tables. To the user, a view ap ...
Aspects of Database Query Evaluation
Aspects of Database Query Evaluation

Building Large-Scale eCommerce Platforms
Building Large-Scale eCommerce Platforms

... Remember that some shared resources (especially legacy systems) are not at all scalable beyond a certain point or are prohibitively expensive and/or time-consuming to scale. Scaling for only essential processing helps prevent the need to scale those systems. The second problem with synchronous proce ...
Best Practices - Pivotal Greenplum Database Documentation
Best Practices - Pivotal Greenplum Database Documentation

... Greenplum Database Best Practices Guide describes best practices for Greenplum Database. A best practice is a method or technique that has consistently shown results superior to those achieved with other means. Best practices are found through experience and are proven to reliably lead to a desired ...
mysql Functions
mysql Functions

... PHP stores query results until the end of the script. If a query result must be released earlier (for example, if you have executed a large number of queries in a script and don’t want to waste memory), you can release the result early with mysql_free_result. This is particularly useful if the scrip ...
SEER Database Administrator`s Guide
SEER Database Administrator`s Guide

... SEER application users. SEER application users who wish to set up desktop databases for their individual use should also read this document. SEER application users who do not intend to use the database capability do not require the information presented in this administrator’s guide. ...
Monitoring Secrets for SAP
Monitoring Secrets for SAP

... Every instance has a number between 00 and 99, the socalled instance number (abbreviated by InstNr or NN to indicate the numerical value). The installation default is 00. If more than one instance is installed on the same host, they MUST have different InstNr. InstNrs are usually part of the Port nu ...
Murach MySQL Chapter 1 slides
Murach MySQL Chapter 1 slides

Oracle for zSeries - International Oracle on z Systems SIG
Oracle for zSeries - International Oracle on z Systems SIG

... Leveraged benefits  Consolidation ...
Enterprise eTIME Database Administrator`s Guide
Enterprise eTIME Database Administrator`s Guide

marked - Kansas State University
marked - Kansas State University

...  The match attribute of xsl:template specifies a pattern in XPath  Elements in the XML document matching the pattern are processed by the actions within the xsl:template element  xsl:value-of selects (outputs) specified values (here, customer_name) ...
Presentation
Presentation

... Comments OKS is a persistency C++ library. No services other than the ones included in the library are made available; No concurrency management is available. In the OBK case concurrency was implemented using OS mechanisms; ...
Slides for Ch-3
Slides for Ch-3

... 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 ) ...
SUGI 28: Performance Tuning SAS/ACCESS(r) for DB2
SUGI 28: Performance Tuning SAS/ACCESS(r) for DB2

NATIVE XML DATABASES vs. RELATIONAL DATABASES IN
NATIVE XML DATABASES vs. RELATIONAL DATABASES IN

... Native XML database (NXD) is best described as a database that has an XML document (or its rooted part) as its fundamental unit of (logical) storage and defines a (logical) model for an XML document, as opposed to the data in that document (its contents). It represents logical XML document model (no ...
r  VBA How To
r VBA How To

BCA Database Management System
BCA Database Management System

... 57. An outstanding functionality of SQL is its support for automatic ………… to the target data. A) Programming B) Functioning C) Navigation D) Notification Correct Answer: C 58. ………………… is a special type of integrity constraint that relates two relations & maintains consistency across the relations. A ...
CONSTRAINT-BASED GENERATION OF
CONSTRAINT-BASED GENERATION OF

... quires multiple test inputs at boundaries [36]. The reason is that errors tend to occur at extreme or boundary points. LC criteria involve instantiating clauses in a logical expression with concrete truth values. Researchers have focused on active clause coverage criteria to construct a test such th ...
Database Programming with Perl
Database Programming with Perl

AUTONOMIC WORKLOAD MANAGEMENT FOR DATABASE MANAGEMENT SYSTEMS
AUTONOMIC WORKLOAD MANAGEMENT FOR DATABASE MANAGEMENT SYSTEMS

... standards, architecture, products, services and tools that enable computing systems to be selfmanaging. An autonomic computing system, with the ability to self- configure, self-optimize, selfprotect, and self-heal, is a self-managing system that manages its behavior in accordance with high-level obj ...
FLEETMATE
FLEETMATE

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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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