Data Warehouse Schema Design
... stores a set of materialized relational views. These materialized views have to be maintained in order to keep track of updates in the operational databases, and self-maintainability has been identified as desirable property that can be exploited during view maintenance to avoid maintenance queries ...
... stores a set of materialized relational views. These materialized views have to be maintained in order to keep track of updates in the operational databases, and self-maintainability has been identified as desirable property that can be exploited during view maintenance to avoid maintenance queries ...
Data Warehouse Schema Design
... stores a set of materialized relational views. These materialized views have to be maintained in order to keep track of updates in the operational databases, and self-maintainability has been identified as desirable property that can be exploited during view maintenance to avoid maintenance queries ...
... stores a set of materialized relational views. These materialized views have to be maintained in order to keep track of updates in the operational databases, and self-maintainability has been identified as desirable property that can be exploited during view maintenance to avoid maintenance queries ...
When to use Oracle Database In
... Database In-Memory features a highly optimized In-Memory Column Store (IM column store) maintained alongside the existing row formatted buffer cache as depicted below in Figure 1. The primary purpose of the IM column store is to accelerate column-oriented data accesses made by analytics operations. ...
... Database In-Memory features a highly optimized In-Memory Column Store (IM column store) maintained alongside the existing row formatted buffer cache as depicted below in Figure 1. The primary purpose of the IM column store is to accelerate column-oriented data accesses made by analytics operations. ...
approximate query processing - CSIRO Research Publications
... Later, the wavelet concept was extended to answer more general approximate queries. The results of recent studies have clearly shown that wavelets can be very effective in handling aggregates over high-dimensional online analytical processing (OLAP) cubes, while avoiding the high construction costs ...
... Later, the wavelet concept was extended to answer more general approximate queries. The results of recent studies have clearly shown that wavelets can be very effective in handling aggregates over high-dimensional online analytical processing (OLAP) cubes, while avoiding the high construction costs ...
my presentation at OWASP conference 2008
... operations such as UNION .Another way for implementing SQL Injection using SQL Manipulation method is by changing the where clause of the SQL statement to get different results. ...
... operations such as UNION .Another way for implementing SQL Injection using SQL Manipulation method is by changing the where clause of the SQL statement to get different results. ...
slides for HDMS`15
... Difference in the performance more visible when SPARQL queries involve numerous triple patterns (which translate to expensive JOIN statements) ...
... Difference in the performance more visible when SPARQL queries involve numerous triple patterns (which translate to expensive JOIN statements) ...
DBC-e05-Chapter-03-PP - Villanova University
... All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the publisher. Printed in the United States of Americ ...
... All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the publisher. Printed in the United States of Americ ...
Slides for Ch-4
... create domain Dollars numeric(12,2) not null Any database modification that would cause a null to be inserted in an ...
... create domain Dollars numeric(12,2) not null Any database modification that would cause a null to be inserted in an ...
SQL Server Permissions and Security Principals
... A sproc/view can return data from a table in another database without permissions, if the two databases share the same owner login, by enabling Cross-Database Ownership Chaining on both databases. This is not enabled by default. It has to be enabled at the server level then activated in each dat ...
... A sproc/view can return data from a table in another database without permissions, if the two databases share the same owner login, by enabling Cross-Database Ownership Chaining on both databases. This is not enabled by default. It has to be enabled at the server level then activated in each dat ...
Database Programming Languages (DBPL-5)
... Referentially transparent update mechanisms have been proposed for a few database programming languages: FDBPL [12], PFL [14], and Staple [10]. In these languages, databases are represented as updatable environments (FDBPL and PFL) or are manipulated through roots of persistence with string identifi ...
... Referentially transparent update mechanisms have been proposed for a few database programming languages: FDBPL [12], PFL [14], and Staple [10]. In these languages, databases are represented as updatable environments (FDBPL and PFL) or are manipulated through roots of persistence with string identifi ...
Ch01 slides
... data models To work with any of the data models other than the relational database model, you must know the physical structure of the data and the relationships between the files or tables. Because relationships are difficult to implement in a conventional file system, redundant data is often st ...
... data models To work with any of the data models other than the relational database model, you must know the physical structure of the data and the relationships between the files or tables. Because relationships are difficult to implement in a conventional file system, redundant data is often st ...
The Curious Case of Database Deduplication
... What drives low deduplication ratios for databases ? 2014 Data Storage Innovation Conference. © Oracle Inc. All Rights Reserved. ...
... What drives low deduplication ratios for databases ? 2014 Data Storage Innovation Conference. © Oracle Inc. All Rights Reserved. ...
Clonedb - New Zealand Oracle Users Group
... • Copy-On-Write location is NFS. Is that an issue for you? • If a cloned database is to be used for performance testing, do you really want a different storage technology in the mix? • Possible performance improvements on the horizon? ...
... • Copy-On-Write location is NFS. Is that an issue for you? • If a cloned database is to be used for performance testing, do you really want a different storage technology in the mix? • Possible performance improvements on the horizon? ...
Data Warehousing: the New Knowledge Management Architecture
... process of normalization caused it to be split by subject and placed in 28 tables. A similar problem was encountered during the modelling stage of the Winchester census Database where the removal of uninhabited properties into a separate table following normalization would make it impossible to reta ...
... process of normalization caused it to be split by subject and placed in 28 tables. A similar problem was encountered during the modelling stage of the Winchester census Database where the removal of uninhabited properties into a separate table following normalization would make it impossible to reta ...
glossary - Cengage
... CREATE INDEX—A SQL command that creates indexes on the basis of any selected attribute or attributes. CREATE TABLE—A SQL command used to create a table’s structures, using the characteristics and attributes given. CREATE VIEW—A SQL command that creates a logical, “virtual” table based on stored end- ...
... CREATE INDEX—A SQL command that creates indexes on the basis of any selected attribute or attributes. CREATE TABLE—A SQL command used to create a table’s structures, using the characteristics and attributes given. CREATE VIEW—A SQL command that creates a logical, “virtual” table based on stored end- ...
FederatedDataWarehouse
... converts the modeling languages of the data sources into this model. Supporting Telecom Business Processes by means of - Workflow Management And Research into federated databases was originally motivated by the problem of legacy systems (see [Brod92, Shet90]) However, we argue that database federati ...
... converts the modeling languages of the data sources into this model. Supporting Telecom Business Processes by means of - Workflow Management And Research into federated databases was originally motivated by the problem of legacy systems (see [Brod92, Shet90]) However, we argue that database federati ...
Functional Programming Paradigm
... There is no command sequence. First command makes no difference to the second since there is no state to mediate between them. ...
... There is no command sequence. First command makes no difference to the second since there is no state to mediate between them. ...
Document
... large instant-access applications. ■ Instant access is made possible by databases. – Individual database records can be accessed directly without sequentially searching. – Databases have been used in business applications for decades. ...
... large instant-access applications. ■ Instant access is made possible by databases. – Individual database records can be accessed directly without sequentially searching. – Databases have been used in business applications for decades. ...
Data Definition Commands
... Updatable Views Views that can be updated which will update their corresponding tables. Views can be updatable if the primary key of the base table is a column in the view that also has unique values ...
... Updatable Views Views that can be updated which will update their corresponding tables. Views can be updatable if the primary key of the base table is a column in the view that also has unique values ...
Chapter 9
... the same attribute in another relation Null Value: a special field value, distinct from zero, blank, or any other value, that indicates that the value for the field is missing or otherwise unknown © 2014 Pearson Education, Inc. Publishing as Prentice Hall ...
... the same attribute in another relation Null Value: a special field value, distinct from zero, blank, or any other value, that indicates that the value for the field is missing or otherwise unknown © 2014 Pearson Education, Inc. Publishing as Prentice Hall ...
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.