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On Index-free Similarity Search in Metric Spaces
On Index-free Similarity Search in Metric Spaces

... Motivation for index-free search  indexing is not desirable (or even possible) if  we have a highly changeable database  more inserts/deletes/updates than searches, i.e., streaming databases, archives, logs, sensory databases, etc.  we perform isolated searches  a database is created for a few ...
Cloud Computing Tutorial Christophe Poulain Yogesh Simmhan Bora Beran
Cloud Computing Tutorial Christophe Poulain Yogesh Simmhan Bora Beran

Relational Databases and Microsoft Access
Relational Databases and Microsoft Access

... This text is a free introductory text that introduces MS Access and relational database design. The motivation is to support a second-year course on database systems which, to the student, is either a service course providing an introduction to database concepts, or, as a prerequisite for more advan ...
Relational Databases and Microsoft Access
Relational Databases and Microsoft Access

... 1 RELATIONAL DATABASES AND MS ACCESS A database is an organized collection of data. A database may be on paper, or held in computer files such as spreadsheets or more formally in a software system known as a computerized database management system (for example: DB2, db4o, IMS, MS Access, MS SQL Serv ...
Design and Implementation of Database Intrusion Detection System
Design and Implementation of Database Intrusion Detection System

... algorithm that mines user profile based on the pattern of submitted queries. An algorithm of mining database user query profiles of transaction level is presented. This algorithm changes the computing method of the support and confidence in association rules mining by adding query structure and attr ...
点击这里下载
点击这里下载

... • Indexes are used for both statistics and implementation choices • Indexes provide RRN/Rids and/or data (Index Only Access Plans) • Indexes are scanned or probed – Probe can only occur on contiguous, leading key columns ...
motor insurers` bureau
motor insurers` bureau

... team needed a better way of meeting the everincreasing data requirements of the expanding organisation. Although Microsoft BI technology was already in place, many of the MI team’s tasks were resource intensive and therefore the increasing information needs of the business could not always be met. T ...
Whats_New_in_JChem_and_Markush_CXNEUGM09
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... – Query drawing and structure visualization (Marvin) Provides the most consistent interface and back-end. ...
Access Project 1 - Maryville University
Access Project 1 - Maryville University

... • Click Save in box arrow • Click 3½ Floppy (A:), or select the corresponding drive for the media you are using • Click the File name text box • Use BACKSPACE key or the DELETE key to delete db1 • Type Ashton James College as the file name • Click the Create button to create the database ...
RealDB: Low-Overhead Database for Time
RealDB: Low-Overhead Database for Time

... limits backup blocks, O(1) performance  Transaction logging only on data block allocation  Size management: overwrite oldest data block – ...
Rack servers: Database price performance
Rack servers: Database price performance

... a typical online transaction processing (OLTP) database. DS2, which simulates an online e-commerce DVD store, has database components and Web server components, and includes driver programs that put heavy loads on the server. We opted to use the included driver program to stress the database layer d ...
Chapter 19: Distributed Databases
Chapter 19: Distributed Databases

... If none of the above cases holds, then all active sites must have a record in their logs, but no additional control records (such as of ). In this case active sites must wait for Ci to recover, to find decision. ...
VIQING: Visual Interactive QueryING
VIQING: Visual Interactive QueryING

... – Can incrementally build and refine queries – Query manipulations on custom graphical representation of data, which is easier to understand than text – Don’t need to know SQL syntax -- just drag and drop (direct-manipulation) ...
Decision Support System Architecture, Hardware, and Operating
Decision Support System Architecture, Hardware, and Operating

... time and cost by using this. The disadvantages of using a client/server system are the complexities of application development and management are much greater in a client/server system than they are on a single computer, security also becomes a major concern. Security features, perhaps including fir ...
Using Hippocratic Database Technology to
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Comparing the Performance of Object and Object Relational
Comparing the Performance of Object and Object Relational

... When object oriented programming languages such as Java, C++ and Smalltalk became popular in the 1980s, application developers found a mismatch between their applications’ needs and Relational Database Management Systems (RDBMSs). The mismatch led to the invention of Object Database Management Syste ...
Designing, implementing and evaluating a database for a software
Designing, implementing and evaluating a database for a software

... optimal. New data is being stored around the clock, so the situation is just getting worse all the time. The database is difficult to expand and update; when something new is needed to be added into the database, a new table is just created. It has not been thought how, for example, the current tabl ...
Decision Support System Architecture, Hardware, and Operating System Platforms
Decision Support System Architecture, Hardware, and Operating System Platforms

... time and cost by using this. The disadvantages of using a client/server system are the complexities of application development and management are much greater in a client/server system than they are on a single computer, security also becomes a major concern. Security features, perhaps including fir ...
Physical Database Design
Physical Database Design

... Assume a relation student(ssn, name, age, gpa…) is given that contains 100000 tuples which are stored in 1000 blocks (100 tuples fit into one block) using heap file organization. Additionally, an index on the age attribute (which is an integer field) has been created that takes 80 blocks of storage, ...
View PDF - CiteSeerX
View PDF - CiteSeerX

... C++ tools to share the information and present it in di erent ways. A similar doctrine was developed in the Interlisp [3] project. Unfortunately, many C and C++ tools today still violate this basic principle. A Well-Conceived Conceptual Model: A conceptual model based on the entity-relationship mode ...
Ensemble of Classifiers Based on Association Rule Mining
Ensemble of Classifiers Based on Association Rule Mining

... Data Fusion: If we have several sets of data obtained from various sources, where the nature of features are different, a single classifier can not be used to learn the information contained in all of the data. Applications in which data from different sources are combined to make a more informed de ...
DMExpress and DMX-h
DMExpress and DMX-h

... Create a DMExpress task to store a list of database connections, remote file connections, HDFS connections, mainframe connections, etc. Any project which needs any connection information should link to this shared task to provide an easy way to manage connections. ...
Database creation and/or reorganization over multiple database
Database creation and/or reorganization over multiple database

... some of the records of the database may be tagged for deletion. tag these records. Over some period of time, those should be physically removed from the database. Hence, removing ...
>> This is the developerWorks podcasts Java technical
>> This is the developerWorks podcasts Java technical

... ability to do queries and indexing and all the other great stuff that people expect out of database technology is what we get out of this merger. I read a blog post when we completed the merger talking about that tweet and sort of in jest but very seriously saying, please keep the good ideas coming. ...
KorthDB6_ch5
KorthDB6_ch5

... Permits definition of procedures in SQL, with if-then-else statements, for and while loops, etc. ...
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Database model



A database model is a type of data model that determines the logical structure of a database and fundamentally determines in which manner data can be stored, organized, and manipulated. The most popular example of a database model is the relational model, which uses a table-based format.
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