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paper - VLDB Endowment
paper - VLDB Endowment

... eral sites – depending on the physical data organization or the workload situation at read-only sites. Propagation transactions are performed during the idle time of a site in order to propagate the changes present in the local propagation queues to the secondary copies. Therefore, propagation trans ...
ACES Proceeding style
ACES Proceeding style

... One of the basic attributes of Web services is their loose integration. One does not have to use SOAP, for example, as the remote method invocation procedure. There are obviously times when this is desirable. For example, a number of protocols are available for file transfer, focusing on some aspect ...
Database Systems: Design, Implementation, and Management
Database Systems: Design, Implementation, and Management

... Database Systems: Design, Implementation, & Management, 5th Edition, Rob & Coronel ...
1188 Development of InterBase since year 2000
1188 Development of InterBase since year 2000

... isolation or (most often) in conjunction with the SQL ORDER BY clause. The WITH TIES clause must be used in conjunction with ORDER BY. The ROWS clause introduces three new InterBase SQL keywords: ROWS, TIES, and PERCENT. ...
Web server
Web server

... • Scripting languages - Allow us to add capability to what’s provided by HTML. Allow parts of the page to be built “on the fly” • Client-side scripts - Script engine on client machine builds parts of page when page is loaded by browser (date is simple example) • Server-side scripts - Script engine o ...
PowerPoint
PowerPoint

... To connect PHP to a database, use mysql_connect, which can have three parameters: • Host (default is localhost) • Username (default is the username of the PHP script) • Password (default is blank, which works if the database does not require a password) ...
LINQ and LINQ-to-SQL
LINQ and LINQ-to-SQL

... Create a database called NorthwindTwin with the same structure as Northwind using the features from ObjectContext. Find for the API for schema generation in MSDN or in Google. ...
Data Manipulation Subsystem
Data Manipulation Subsystem

... Student Learning Outcomes 4. List the major components of a database management system and describe their roles 5. Discuss how Web databases support various e-commerce functions 6. Describe how data warehouses and datamining tools help create business intelligence ...
SS-L7.6 (pg. 5349)
SS-L7.6 (pg. 5349)

... and other “Big Table Like” databases leverage the HadoopDFS by modeling Google Big Table [14]. These databases are designed for data mining applications that do little read-modify-write and where statistical consistency is more than adequate. Under these the relaxed restrictions there is potential t ...
Plots Database XML
Plots Database XML

Database Mirroring
Database Mirroring

... Solutions to common scenarios Case study Summary ...
Slide Template - Emunix Documentation on the Web
Slide Template - Emunix Documentation on the Web

... – This characteristic overcomes a major disadvantage of ODBC – With ODBC, a vendor must create an ODBC driver for almost all DBMS features and functions in order to participate in ODBC at all Copyright © 2004 Database Processing: Fundamentals, Design, and Implementation, 9/e by David M. Kroenke ...
Exploiting SQL Server Security Holes
Exploiting SQL Server Security Holes

...  When grants and denies conflict deny wins  Almost always  Due to ANSI standards, an explicit grant on a column overrides and explicit deny on a column ...
Automated Resolution of Semantic Heterogeneity in
Automated Resolution of Semantic Heterogeneity in

... thesaurus as the taxonomy to construct hierarchical summary schemas ...
- bYTEBoss
- bYTEBoss

...  It is good to have BCNF relation schemas.  If a relation schema is not in BCNF, then decompose it into a set of relation schemas: every new schema is in BCNF; it is lossless-join (can guarantee); it is dependency-preserving (no guarantee).  If not possible to have all nice properties, be happ ...
Grid Data Management: Open Problems and New Issues
Grid Data Management: Open Problems and New Issues

... appropriate database servers. These solutions rely on some form of global directory management, where directories can be distributed and replicated. However, current solutions focus on data sharing and collaboration for statically defined virtual organizations with powerful servers. They cannot be e ...
Virtuoso Virtual Database
Virtuoso Virtual Database

1439078572_248439x
1439078572_248439x

...  Current values: A change to the database made by any user yields current data values for all other users.  Task-data independence: As users’ information needs expand, the new needs can be more easily satisfied than under the flat-file approach. Hall, Accounting Information Systems, 7e ©2011 Cenga ...
Data-Access-with
Data-Access-with

... and Groups(group_id, group_name) along with sequences fro populating their primary keys. Write classes User and Group that correspond to these tables. Write methods for adding new users and groups. Write methods for listing all groups, all users and all users by given group. Write methods for updati ...
Migrating to Azure SQL Database Tips, Tricks and Lessons Learned
Migrating to Azure SQL Database Tips, Tricks and Lessons Learned

Exam 2
Exam 2

... run much faster as a result. ______ DELETE-ing from a view that is based on a natural join of its base tables is acceptable. ______ A view can provide a rejoining of decomposed relations. ______ In an object database, the database objects must have persistent storage in secondary storage. ______ In ...
Chapter 10
Chapter 10

... Process of comparing data with a set of rules to find out if data is correct Reduce data entry errors and enhance data integrity before program writes data on disk ...
1. INTRODUCTION In the planning area, the reasoning about action
1. INTRODUCTION In the planning area, the reasoning about action

... In the planning area, the reasoning about action is important, because the plans are made by a sequence of actions. So, a deep study of how to treat the ramification problem in actions is essential, in order to provide for planning systems correct effects caused by each action presented in a plan. I ...
718 KB - PASS Security Virtual Chapter
718 KB - PASS Security Virtual Chapter

- Courses - University of California, Berkeley
- Courses - University of California, Berkeley

... • SQL/Persistent Stored Modules (PSM) -Defines the rules for developing SQL routines, modules, and functions such as those used by stored procedures and triggers. This is implemented in many major RDBMSs through proprietary, nonportable languages, but for the first time we have a standard for writin ...
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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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