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Get More out of Your Databases with search
Get More out of Your Databases with search

... and the simplicity of developing applications using standard Web formats and protocols means complex database applications that are frequently outsourced can be brought in-house, or at least easily modified internally even if they are still outsourced. ...
EM408 - Backup and Recovery of ASA
EM408 - Backup and Recovery of ASA

... Running dbremote with the -u option will force dbremote into only sending transactions that occur in the off-line logs Therefore, if the current transaction log (and mirror log) are both lost, you can guarantee that no remote users have received messages from the lost log and nobody will need to be ...
XP Open an existing database
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... Query Datasheet view looks very similar to Table view. However, the data displayed in a query does not have to be in the same sequence as it appears in table view. You can display fields in any order in a query. ...
PERFORMANCE TUNING IN MICROSOFT SQL SERVER DBMS
PERFORMANCE TUNING IN MICROSOFT SQL SERVER DBMS

Characteristics of Next Generation Databases
Characteristics of Next Generation Databases

... -- Avoid potential inconsistency - Can predict the behavior (problems) of database systems - Avoid update anomalies discussed below ...
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...  Employee has FK to a Supervisor  Supervisor needs to be saved first ...
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... if they exist, then we have resolve a lot of issues:  Deployment, running platform, and very least license ...
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... The Role of Information Systems in Organizations (cont.)  Database systems are integral components in computer- ...
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... Study Guide: This study guide gives a complete example of the development of a spatial database from the feasibility study through the operation and maintenance of this spatial database. In this example, we use a Waterfall method but all other software development methods or database design methods ...
Chapter 15 Developing Databases: Logical Data Modeling
Chapter 15 Developing Databases: Logical Data Modeling

... 6. A foreign key is identified by using a dashed underline. 7. Instances in a relation cannot prove that a functional dependency exists; however, you can use sample data to demonstrate that a functional dependency does not exist. The sample data does not show you every possible instance, only a samp ...
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... SQL > alter database recover managed standby database using current logfile disconnect; 4. Create clone of snapshot ...
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... sender to wait for the reply. An asynchronous message does not have a reply. Synchronous communication between objects synchronizes their execution and may, therefore, impede the effective parallelism. Asynchronous communication does not have this drawback. Communication between objects that are all ...
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... Impedance mismatch … refers to the difference in concepts between object models and table model. There is (IMHO) a reasonable mapping of object concepts to tables; not so clear mapping backwards. See following for discussions of mismatch: http://c2.com/cgi/wiki?ObjectRelationalMapping http://en.wiki ...
EzCatDB: the enzyme reaction database, 2015
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... contains no active-site residue, then the active-site conservation will not be calculated. This system is suitable for quick searches, and also for sequences longer than 800 residues that might consist of multiple domains, since the BLAST algorithm adopts local alignment (15,16). For instance, the s ...
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... connection – In principle it would be possible to use another application, which also supports ODBC or even write your own client to access the SQL server. ...
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... • When "Receive Notification Exists" is turned on, the specified bit device will be turned on when the ACTION is completed. This can be used as the trigger condition (trigger) of the subsequent ACTION when you want to execute two or more ACTIONs sequentially. ...
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... seek time (moving arms from disk head to the requested track) rotational delay (waiting for requested block to be rotated under head) transfer time (moving data from disk to main memory) Seek time varies from about 1 to 20 millisecond (msec) Rotational delay varies from 0 to 10msec Transfer rate is ...
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... RAC (Real Application Clustering) are underway, however, do companies realize that the requisite hardware and licensing costs can quickly become prohibitive, and that their desired solution state is unable to scale incrementally on demand. • Scale out: Alternatively, enterprise IT managers ‘scale o ...
Oracle Database 12c Essentials Exam Study Guide
Oracle Database 12c Essentials Exam Study Guide

... Your customer has three requirements: X, Y, Z. Identify the two steps that must be completed in order to meet those requirements. 2) “You are running a two-instance database with six redo logs defined. You decide to add a third thread to support a third database instance, on the third node of the cl ...
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original - Kansas State University
original - Kansas State University

... a host language, and the SQL structures permitted in the host language comprise embedded SQL.  The basic form of these languages follows that of the System R embedding of SQL into PL/I.  EXEC SQL statement is used to identify embedded SQL request to the preprocessor EXEC SQL
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About the Presentations

... • Data access language: provide a language that allows database access • Data integrity: enable constraints or checks on data • Data dictionary: maintain information about database structure Oracle 11g: SQL ...
Centralized System Logging With A Database
Centralized System Logging With A Database

... Centralized System Logging With A Database Manitoba UNIX User Group Kevin McGregor February 13, 2007 ...
About the Presentations
About the Presentations

... • Data access language: provide a language that allows database access • Data integrity: enable constraints or checks on data • Data dictionary: maintain information about database structure Oracle 11g: SQL ...
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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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