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Updateable Views
Updateable Views

... languages. Novelty of our approach is that a view definer has the possibility to introduce into a view definition any information about intents of view updates. The information has the form of procedures, which dynamically overload generic view updating operation. This feature opens possibilities, w ...
2: Entity-Relationship Model
2: Entity-Relationship Model

... stored with the weak entity set, since it is implicit in the identifying relationship.  If loan-number were explicitly stored, payment could be made a ...
Chapter 2: Entity-Relationship Model Entity Sets
Chapter 2: Entity-Relationship Model Entity Sets

... stored with the weak entity set, since it is implicit in the identifying relationship. ! If loan-number were explicitly stored, payment could be made a ...
Chapter 6
Chapter 6

... Although it is possible to replace any nonbinary (n-ary, for n > 2) relationship set by a number of distinct binary relationship sets, a n-ary relationship set shows more clearly that several entities participate in a single relationship. ...
Short Presentation Title
Short Presentation Title

... The information in this presentation is confidential and proprietary to SAP and may not be disclosed without the permission of SAP. This presentation is not subject to your license agreement or any other service or subscription agreement with SAP. SAP has no obligation to pursue any course of busine ...
Adaptive Cost Estimation for Client-Server based Heterogeneous Database Systems
Adaptive Cost Estimation for Client-Server based Heterogeneous Database Systems

... Advances in relational database technologies have enabled large organizations and companies to store and manage unprecedented large volumes of data in relational databases. However, due to certain considerations, such as specialized applications requirements, legacy systems, or even strategic decisi ...
Chapter 2: Entity-Relationship Model Entity Sets Entity Sets
Chapter 2: Entity-Relationship Model Entity Sets Entity Sets

... line connecting the entity sets. The relationship set name is written adjacent to the line. ! The role played by an entity set in a relationship set m ...
Data Import for Interbase/Firebird User's Manual © 1999-2014 EMS Database Management Solutions, Ltd.
Data Import for Interbase/Firebird User's Manual © 1999-2014 EMS Database Management Solutions, Ltd.

Sybase - Oracle
Sybase - Oracle

... Adaptive Server clustered indexes may need to be done. In Oracle9i, Index-Organized Tables (IOTs) can be used to simulate a Sybase Adaptive Server clustered index. Index-Organized Tables were introduced in Oracle9i to provide fast, key-based access to table data for queries that involve exact match ...
Final Thesis - Computer Science
Final Thesis - Computer Science

... and scalability tests, which of the two Database Management Systems (Oracle 9i or SQL Server 2000) performs and scales better than the other under certain specified conditions. For this project the author only considered performance and scalability of the DBMS, other aspects like database security, ...
1 1. Introduction 1.1. Overview of POSTGRES and XPRS
1 1. Introduction 1.1. Overview of POSTGRES and XPRS

I Agree - FactSet
I Agree - FactSet

... herein are provided in SQL formatted for MSSQL. It may to be necessary adjust the query language to suit a different SQL DBMS. Sample queries should be viewed as possible examples of data calculations and are subject to change. The queries provided should be used as a guide to understand how the und ...
Part of chapter 7 - Software and Mind
Part of chapter 7 - Software and Mind

Migrating External Loader Sessions to Dual Load
Migrating External Loader Sessions to Dual Load

View
View

... statement should only affect rows that meet a specified criterion. WHERE clauses are not mandatory clauses of SQL DML statements, but should be used to limit the number of rows affected by a SQL DML statement or returned by a query. WHERE is an SQL reserved word. EXAMPLE : SELECT * FROM student WHER ...
Document
Document

... Periodic reorganization of entire file is required.  Advantage of B+-tree index files:  automatically reorganizes itself with small, local, changes, in the face of insertions and deletions.  Reorganization of entire file is not required to maintain ...
Sneaking RFIDs
Sneaking RFIDs

... where is the airport code written on the tag when the bag was checked in.  The middleware then builds a query from the fetched data.  Suppose the bag has a bogus tag with data ...
Efficient Prediction of Difficult Keyword Queries over Databases
Efficient Prediction of Difficult Keyword Queries over Databases

... However, one requires domain knowledge about the data sets to extend idea of clarity score for queries over databases. Each topic in a database contains the entities that are about a similar subject. It is generally hard to define a formula that partitions entities into topics as it requires finding ...
FrontBase® Users Guide
FrontBase® Users Guide

Chapter 1 - KSU Web Home
Chapter 1 - KSU Web Home

... application design. It has a dedicated controller module which is in charge of user request processing such as authorization and authentication, deciding flow control dispatching such as selection of presentation views, as well as selection and instantiation of data models. The controller module is ...
Relational Modeling
Relational Modeling

...  May be worth 30 GB overhead to keep sales header records if this is a common query structure because both ease-of-use and performance will be enhanced (at some cost in storage)? ...
Relational Modeling
Relational Modeling

...  May be worth 30 GB overhead to keep sales header records if this is a common query structure because both ease-of-use and performance will be enhanced (at some cost in storage)? ...
Database Automation using VBA - ucb
Database Automation using VBA - ucb

... An event is something that happens to an object. For example, the door closes when you pull it. Or the car turns when you turn the steering wheel. Closing and Turning are events. Events and method are closely related, it is the cause-and-effect way. An event happens when the user does something. The ...
Documenation - PivotalGuru
Documenation - PivotalGuru

Document
Document

... Error prone especially when doing multiple upgrades at a time Takes 2 to 4 person hours for each database upgrade after libraries are prepared – We had to perform more upgrades than the number of databases we have. The overall number is based on the number of baseline application backups/saves used ...
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Database

A database is an organized collection of data. It is the collection of schemes, tables, queries, reports, views and other objects.The data is typically organized to model aspects of reality in a way that supports processes requiring information, such as modelling the availability of rooms in hotels in a way that supports finding a hotel with vacancies.A database management system (DBMS) is a computer software application that interacts with the user, other applications, and the database itself to capture and analyze data. A general-purpose DBMS is designed to allow the definition, creation, querying, update, and administration of databases. Well-known DBMSs include MySQL, PostgreSQL, Microsoft SQL Server, Oracle, Sybase and IBM DB2. A database is not generally portable across different DBMSs, but different DBMS can interoperate by using standards such as SQL and ODBC or JDBC to allow a single application to work with more than one DBMS. Database management systems are often classified according to the database model that they support; the most popular database systems since the 1980s have all supported the relational model as represented by the SQL language. Sometimes a DBMS is loosely referred to as a 'database'.
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