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Slides - Department of Computer Science
Slides - Department of Computer Science

... discovered by data mining are “interesting”. A pattern is interesting for a given application if it: ...
Statement, CallableStatement
Statement, CallableStatement

... pstmt.setFloat(4,age); • All parameters in JDBC are represented by the ? symbol, which is known as the parameter marker. You must supply values for every parameter before executing the SQL statement. ...
driver
driver

... • Hint: for a large threaded database server, create a Connection Manager object • It is responsible for maintaining a certain number of open connections to the database • When your applications need a connection, they ask for one from the CM’s pool • Why? Because opening and closing connections ta ...
a comparison of the relational database model and the associative
a comparison of the relational database model and the associative

... labels & values are attributes).” In addition, he notes that the ADBMS allows for data warehousing without tables and that data can be imported directly from existing databases into an associative database model and the original information set. As noted earlier in this paper, software based on the ...
ICT Database Lesson 1
ICT Database Lesson 1

... • Examples: creating new tables, deleting rows from existing ones and updating records or creating entirely new ones. • Popular query to run because they allow for many records to be changed at one time • Five kinds of action queries are: 1. Insert Query – adds data to an existing table 2. Append Qu ...
TOPIC-4 - Info Poster
TOPIC-4 - Info Poster

... Database programs convert data into information and can be used for both personal and business information management and organization. Database files, which are the foundation of databases, are made up of individual units of data called fields. When grouped together, these fields are called records ...
Parallel Databases
Parallel Databases

... “Soon after the announcement, Varadarajan took delivery of his very first PowerBook laptop running Mac OS X. Within days, he placed an order for the 1100 dual processor, 2.0 GHz Power Mac G5 computers that now drive Virginia Tech’s new supercomputer. Smart choice: In November of 2003 the giant syste ...
Defining Aliases within your Datastore in Data
Defining Aliases within your Datastore in Data

... using the owner ‘STAGINGTEST’ which is the database not the owner name. How Data Services reads owner names of table objects is something to always keep in mind when working with various database platforms. Now that we have that out of the way, let’s discuss a case scenario for defining aliases. Cas ...
Chapter 9 - Personal.kent.edu
Chapter 9 - Personal.kent.edu

... • Within multi-user environments, different transactions may be operating on the same data. As such, the sequencing of uncommitted updates, rollbacks, and commits continuously change the data content. • The 1992 ANSI SQL standards define four isolation levels and specify respective issues. ...
CMPUT 391 Lecture Notes
CMPUT 391 Lecture Notes

... Objective ...
Communicating with the Outside
Communicating with the Outside

... The compilation simple queries requires from 10,000 to 30,000 instructions; for complicated queries, requires from 100,000 to several million instructions Compilation requires read access to the system catalog . Can cause lock blocking if other transactions are accessing the catalog at the same time ...
Structure Elements
Structure Elements

... Fields - smallest unit of information about a record Field name - identifies data stored in the field Up to 64 characters long and can consist of letters, numbers, spaces and special characters ...
Flat File Database
Flat File Database

... Calculated – stores a formula and uses 1 or more of the other fields to carry out a calculation. The answer is displayed. e.g. averages or totals Object (OLE) field. In Microsoft Access, for example, an object field can hold a word document, an Excel spreadsheet or a Paint graphic. ...
Howtodec6-05 - Community Grids Lab
Howtodec6-05 - Community Grids Lab

... method calls into a “glob of software”, we can always make them as Web services by converting interface to WSDL Simple services are gotten by taking functionalities and making as small as possible subject to “rule of millisecond” • Distributed services incur messaging overhead of one (local) to 100’ ...
Data warehouse
Data warehouse

... • Record: collection of related fields • File: collection of related records • Database fields can hold images, sounds, video clips, etc. • Field name allows easy access to the data • Database management system (DBMS): program used to: – Build databases – Populate a database with data – Manipulate d ...
Lecture23 - The University of Texas at Dallas
Lecture23 - The University of Texas at Dallas

... Personalization  EIP differs from say a well-developed content managed ...
System Administration Basics
System Administration Basics

... Result was: Finished import with 10 errors and 0 warnings. See logs/webct.log for details or logs/enterpriseImport.log for list of users who failed to import. Import continued after the failure ...
6 The database middleware CGOE component
6 The database middleware CGOE component

... provide a means for integrating these heterogeneous data sources and constructing singular, consistent views of business data. Heterogeneous data sources can be made available to higher level services via a virtual data layer. For semi-structured data, the database middleware usually provides an ada ...
F1: A Distributed SQL Database That Scales
F1: A Distributed SQL Database That Scales

... Spanner provides serializable pessimistic transactions using strict two-phase locking. A transaction includes multiple reads, taking shared or exclusive locks, followed by a single write that upgrades locks and atomically commits the transaction. All commits are synchronously replicated using Paxos. ...
report - SLAC Conference Services
report - SLAC Conference Services

... existing monolithic RDBMS systems face a potential redesign to move in this direction. Structured and unstructured data are coming together; the textbook approach assuming a perfect schema and clean data is inadequate. The map/reduce paradigm popular in many places lacks efficient join algorithms, a ...
Data Level Auditing™ for Compliance & Security
Data Level Auditing™ for Compliance & Security

... All my database activity is encrypted (i.e. SSL, IPSec, etc…) I need to monitor all forms of privileged user access I need to see the results from stored procedures & triggers I need to see the data impact for SOX compliance and provide “before and after” values I need real-time security alerts I ne ...
Name
Name

...  Extensions introduced in SQL:1999 to support complex types: ...
AccessOverview
AccessOverview

... • Access is a relational database – Data stored with Access are related to one another in multiple ways – Access maintains the data relationships when database is structured correctly ...
Migration
Migration

... • Provides support for Microsoft SQL Server 2000 and Sybase Adaptive Server 12 source databases ...
I m The Characteristics of Databases
I m The Characteristics of Databases

... In this text, table names appear in capital letters. This convention will help you to distinguish table names in explanations. However, you are not required to set table names in capital letters. Access and similar programs will allow you to write a table name as STUDENT, student, Student, stuDent, ...
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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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