Introductory slides for JDBC & Java Servlets
... Advantage of using JDBC drivers is that they are a de facto standard for PC database access, and are available for many DBMSs, for very low price ...
... Advantage of using JDBC drivers is that they are a de facto standard for PC database access, and are available for many DBMSs, for very low price ...
Using SQL Databases from Dyalog APL (v11+)
... • Your program sends SQL statements (only) to the server and handles the responses • Some tools hide the fact that everything is done with SQL, by generating SQL for you • SQL is very powerful for reading data (select) and deleting data (delete) • SQL is quite stupidly simple for writing data in mem ...
... • Your program sends SQL statements (only) to the server and handles the responses • Some tools hide the fact that everything is done with SQL, by generating SQL for you • SQL is very powerful for reading data (select) and deleting data (delete) • SQL is quite stupidly simple for writing data in mem ...
OpenACS: robust web development framework
... logic of the program using the normal procedural programming, instead use an special declarative syntax to reflect how the program will act, based on a possible entry, but not relied only on that. A positive effect of writing in a declarative syntax is that the programs usually are more robust in it ...
... logic of the program using the normal procedural programming, instead use an special declarative syntax to reflect how the program will act, based on a possible entry, but not relied only on that. A positive effect of writing in a declarative syntax is that the programs usually are more robust in it ...
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 ...
(A) R - Avi Silberschatz
... To put Loan-info-schema into PJNF, we must decompose it inot the three schemas specified by the join dependency: (loan-number, branch-name) (loan-number, customer-name) (loan-number, amount) ...
... To put Loan-info-schema into PJNF, we must decompose it inot the three schemas specified by the join dependency: (loan-number, branch-name) (loan-number, customer-name) (loan-number, amount) ...
ppt - Spatial Database Group
... Multi-media, active, distributed processing, more powerful operators, data warehouse processing, XML enabled, cloud computing ...
... Multi-media, active, distributed processing, more powerful operators, data warehouse processing, XML enabled, cloud computing ...
... system is built with Visual C# 2005 and embedded Visual C++. The database is built on a Microsoft SQL Server 2005 for server management and statistic reporting. This system shows certain limitations which we intend to lay our focus on and make an attempt to come over in the proposed system. Some of ...
Mapping XML to a Wide Sparse Table
... Mapping XML to a Wide Sparse Table ABSTRACT XML is commonly supported by SQL database systems. However, existing mappings of XML to tables can only deliver satisfactory query performance for limited use cases. In this paper, we propose a novel mapping of XML data into one wide table whose columns ar ...
... Mapping XML to a Wide Sparse Table ABSTRACT XML is commonly supported by SQL database systems. However, existing mappings of XML to tables can only deliver satisfactory query performance for limited use cases. In this paper, we propose a novel mapping of XML data into one wide table whose columns ar ...
Concepts of Parallel and Distributed Database Systems
... Users should be able to behave (at least from a logical standpoint) as if the data were in fact not fragmented at all. •Fragmentation is desirable for performance reasons •Fragmentation must be defined within the context of a distributed database •Fragmentation independence (like location independe ...
... Users should be able to behave (at least from a logical standpoint) as if the data were in fact not fragmented at all. •Fragmentation is desirable for performance reasons •Fragmentation must be defined within the context of a distributed database •Fragmentation independence (like location independe ...
Bioinformatics - Protein Information Resource
... other delimiters such as semicolons or commas. A raw thesaurus was then compiled, associating names with the corresponding UniProtKB entries. The raw thesaurus was further filtered to remove highly ambiguous and nonsensical names. The ‘name filter’ (Table 2) was compiled based on frequency counts of ...
... other delimiters such as semicolons or commas. A raw thesaurus was then compiled, associating names with the corresponding UniProtKB entries. The raw thesaurus was further filtered to remove highly ambiguous and nonsensical names. The ‘name filter’ (Table 2) was compiled based on frequency counts of ...
SQL Databases
... • The source code for SQLite is in the public domain. • According to their website, SQLite is the most widely deployed SQL database engine in the world . ...
... • The source code for SQLite is in the public domain. • According to their website, SQLite is the most widely deployed SQL database engine in the world . ...
System Performance
... because it has been suspended for longer than a preset interval. This interval can usually be set by using a configuration parameter. – Deadlocks occur when two or more application processes hold locks on resources that the others need and without which they cannot proceed. The deadlock detection cy ...
... because it has been suspended for longer than a preset interval. This interval can usually be set by using a configuration parameter. – Deadlocks occur when two or more application processes hold locks on resources that the others need and without which they cannot proceed. The deadlock detection cy ...
A Comparative Study on Oracle and IBM
... process comprises seven different activities by different people. At each workflow step, this document is viewed by the person performing the activity. This example means that each form is retrieved at least seven times. That does not seem like much, but if there are 10,000 of these forms arriving e ...
... process comprises seven different activities by different people. At each workflow step, this document is viewed by the person performing the activity. This example means that each form is retrieved at least seven times. That does not seem like much, but if there are 10,000 of these forms arriving e ...
Defining Relationships
... efficiency and accuracy of your database. Creating a separate table to hold departmental information reduces the redundancy and insures that the information is accurate. Having someone enter a record in our main table and requiring them to enter specific department information is a waste of time and ...
... efficiency and accuracy of your database. Creating a separate table to hold departmental information reduces the redundancy and insures that the information is accurate. Having someone enter a record in our main table and requiring them to enter specific department information is a waste of time and ...
SD31
... 67. Desk top publishing programs (a) Let you create pictures slides or designs to display on screen or to print (b) Help you manage our money (c) Enable you to combine text, ...
... 67. Desk top publishing programs (a) Let you create pictures slides or designs to display on screen or to print (b) Help you manage our money (c) Enable you to combine text, ...
Parallel DB 101
... reorganization tools that rearrange the compiled code SQL Server does a much better job than DB2 at eliminating this class of stalls ...
... reorganization tools that rearrange the compiled code SQL Server does a much better job than DB2 at eliminating this class of stalls ...
Spring, Hibernate, FitNesse... public void process()
... One development DB can also work ok Build + n*integrations must always be separate ...
... One development DB can also work ok Build + n*integrations must always be separate ...
Transaction Management in Fully Temporal System
... temporal data is uni-temporal system. It is based on the extension of the conventional (non-timed) model. The primary key now contains not only the object identifier, but also one or two attributes determining the validity of the row. Consequently, one object can be defined by the various numbers of ...
... temporal data is uni-temporal system. It is based on the extension of the conventional (non-timed) model. The primary key now contains not only the object identifier, but also one or two attributes determining the validity of the row. Consequently, one object can be defined by the various numbers of ...
Beginners Guide to OpenEdge SQL
... • OpenEdge SQL: Authorization Explained • OpenEdge SQL in a 10.1B Multi-Database Environment • OpenEdge® Database Run-time Security Revealed ...
... • OpenEdge SQL: Authorization Explained • OpenEdge SQL in a 10.1B Multi-Database Environment • OpenEdge® Database Run-time Security Revealed ...
Distributed Databases
... Distributed Databases 22. Features of distributed versus centralized database: A Distributed databases are present different features from traditional (centralized system ) so that it is useful to look at the typical features of traditional database and compare them with the features of distributed ...
... Distributed Databases 22. Features of distributed versus centralized database: A Distributed databases are present different features from traditional (centralized system ) so that it is useful to look at the typical features of traditional database and compare them with the features of distributed ...
No Slide Title
... entity sets becomes a super key of the relation. For binary many-to-one relationship sets, the primary key of the “many” entity set becomes the relation’s primary key. For one-to-one relationship sets, the relation’s primary key can be that of either entity set. For many-to-many relationship s ...
... entity sets becomes a super key of the relation. For binary many-to-one relationship sets, the primary key of the “many” entity set becomes the relation’s primary key. For one-to-one relationship sets, the relation’s primary key can be that of either entity set. For many-to-many relationship s ...
Running SQL Scripts
... An SQL file opened in the editor, in fact, can be used as the input pane of the database console. So you can use Ctrl+Enter to execute the statements. When using this way of running the statements: You can select which of the statements should be executed. The statements can contain parameters. Prio ...
... An SQL file opened in the editor, in fact, can be used as the input pane of the database console. So you can use Ctrl+Enter to execute the statements. When using this way of running the statements: You can select which of the statements should be executed. The statements can contain parameters. Prio ...
Competitive Advantages of SQL Anywhere
... iAnywhere's SQL Anywhere is an award-winning data management and synchronization solution with over 15 years of research and development behind it. Over 20,000 developers, 12,000 customers and 1,000 application partners have deployed more than 9 million seats of SQL Anywhere worldwide, making it one ...
... iAnywhere's SQL Anywhere is an award-winning data management and synchronization solution with over 15 years of research and development behind it. Over 20,000 developers, 12,000 customers and 1,000 application partners have deployed more than 9 million seats of SQL Anywhere worldwide, making it one ...
to view the file
... “Find gas stations within 5 kms from now on” – stop query n Result can also be dynamic due to movement of queried objects: “How many police cars are in the city center?” from now on. “Notify me whenever their number changes by more than 3.” ICDE 2001 ...
... “Find gas stations within 5 kms from now on” – stop query n Result can also be dynamic due to movement of queried objects: “How many police cars are in the city center?” from now on. “Notify me whenever their number changes by more than 3.” ICDE 2001 ...
Relational model
The relational model for database management is an approach to managing data using a structure and language consistent with first-order predicate logic, first described in 1969 by Edgar F. Codd. In the relational model of a database, all data is represented in terms of tuples, grouped into relations. A database organized in terms of the relational model is a relational database.The purpose of the relational model is to provide a declarative method for specifying data and queries: users directly state what information the database contains and what information they want from it, and let the database management system software take care of describing data structures for storing the data and retrieval procedures for answering queries.Most relational databases use the SQL data definition and query language; these systems implement what can be regarded as an engineering approximation to the relational model. A table in an SQL database schema corresponds to a predicate variable; the contents of a table to a relation; key constraints, other constraints, and SQL queries correspond to predicates. However, SQL databases deviate from the relational model in many details, and Codd fiercely argued against deviations that compromise the original principles.