• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Team Amazon
Team Amazon

... Department of Computer Science and Engineering Michigan State University From Students… …to Professionals ...
Introduction to Database Systems
Introduction to Database Systems

... recorded (ideally) in only one place in the database. E.g. Employee data not with the payroll and benefit files. Note: Data redundancy is not eliminated entirely. Some data items will appear in more than one place (e.g. employee no.) to represent the relationship with others. ...
Conceptual Design Using the ER Model
Conceptual Design Using the ER Model

... The updateable views are the one defined on single base tables, without aggregate operations. Update on an updateable table implies update of the corresponding base table as well. A view can be dropped by DROP VIEW command. Deleting base tables is more restrictive, as they have to have RESTRICT or C ...
2-Database Software
2-Database Software

... schema or indexing, can't grant privileges to others. This command also creates a student user with password secret. ...
The Client/Server Database Environment
The Client/Server Database Environment

...  Rule of thumb  Mainframe for centralized data that does not need to be moved  Client for data requiring frequent user access, complex graphics, and user interface ...
Week 01 - Pravin Shetty > Resume
Week 01 - Pravin Shetty > Resume

... As you will see from the notes, the recommended text is Hoffer, Prescott and McFadden, ‘Database Management’. The examples and the exercises at the end of most chapters are well worth a read. There is a project, and it is expected that you will work in groups - your tutor will arrange this in the fi ...
Chapter 7
Chapter 7

...  Information is available via a company’s intranet and the Internet.  HTML (hypertext markup language), the language used to construct most Web pages, wasn’t designed to build database queries.  XML (extensible markup language), a newer, more powerful data description language, is designed with i ...
Towards Building Robust Natural Language Interfaces to Databases
Towards Building Robust Natural Language Interfaces to Databases

... The corpus is based on a series of questions gathered from undergraduate students over an example US geography database originally shipped with a Borland product. In addition to the raw geography data, the corpus consists of natural language queries and equivalent logical formulas in Prolog for 250 ...
OBJECT-DATABASE SYSTEM
OBJECT-DATABASE SYSTEM

... – In object-database systems, data objects can be given an object identifier, which is some value that is unique in the database across time. – DBMS is responsible for generating oids and ensuring that an oid identifies an objects and are automatically assigned unique oids. – An object’s oid can be ...
Using Oracle Data Guard to protect your database.
Using Oracle Data Guard to protect your database.

... but still the thing that impresses me the most is its ease of implementation and long term reliability. We don't have to baby sit it. If there are problems, we don't have to dig through documentation to remember how it works. Our management has told us to do more with less DBAs, and Data Guard has h ...
ppt - UMass Boston Computer Science
ppt - UMass Boston Computer Science

... A “persistent object” is an ordinary program object tied via ORM to database data for its long-term state The program objects come and go as needed Don’t confuse this with language-provided persistence (Java/C#), a less robust mechanism Persistent objects have field-materialized identity It makes se ...
XML and Mobile Agent Technology Enabling the Virtual Enterprise
XML and Mobile Agent Technology Enabling the Virtual Enterprise

... for the business. Mobile Agent technology may be able to overcome this set of problems through local interaction. It is equally applicable to the problem of geographically distributed information sources, since mobile agent systems are inherently distributed. ...
Title Goes Here - Binus Repository
Title Goes Here - Binus Repository

... Bina Nusantara University ...
Sites
Sites

...  Alternative models carry out transactions by sending messages  Code to handle messages must be carefully designed to ensure atomicity and durability properties for updates Isolation cannot be guaranteed, in that intermediate stages are visible, but code must ensure no inconsistent states result d ...
Source Code Management for Dynamics NAV in
Source Code Management for Dynamics NAV in

... Not possible to work with more then one developer on 1 object at the same time Which has got a big advantage as well: not necessary to merge on every check in ...
Chapter 1: The Database Environment
Chapter 1: The Database Environment

... Computer support specialists provide help and advice to people and organizations using computer software or equipment. Some, called technical support specialists, support information technology (IT) Computer Support Specialists employees within their organization. Others, called help-desk technician ...
Datacom and Dataquery
Datacom and Dataquery

... Datacom This is NOT a Relational Database Manager or even a sophisticated database manager  This is a filing system, for better organization of data  It has the basic features of a filing system - keys, indexes etc.  It has locking features, to prevent “lost updates”  It does not have features ...
Indiana University of Pennsylvania Dr. Shubra
Indiana University of Pennsylvania Dr. Shubra

... Students enter the SQL Select statements from Homework 4 and determine if the answers are correct. Project2: Using SQL with Third Generation Languages (2 weeks) Students write an interactive menu driven program, which uses SQL to interact with their database. The SQL mechanisms needed such as cursor ...
Evaluating Databases for Cloud Applications
Evaluating Databases for Cloud Applications

... A cloud application user expects the response times (i.e. the speed at which they interact with the system and data) to be predictable no matter where they are located. They also want the wait times (or latency) to be as short as possible for both read and write operations. For a cloud application, ...
OO7 Benchmark
OO7 Benchmark

... One hierarchical 1:N relationship Two M:N relationships ...
Transactions
Transactions

... • All transactions have the following properties (usually called “ACID” properties) • Atomicity – "all or nothing" happens ...
5BackupRecoveryW
5BackupRecoveryW

... O.S. Restore From Hot or Cold Physical BackUp DataFile (s) ...
Chapter 19: Distributed Databases
Chapter 19: Distributed Databases

...  Alternative models carry out transactions by sending messages  Code to handle messages must be carefully designed to ensure atomicity and durability properties for updates Isolation cannot be guaranteed, in that intermediate stages are visible, but code must ensure no inconsistent states result d ...
Test Reviews “Exam 1” - Resources for Academic Achievement
Test Reviews “Exam 1” - Resources for Academic Achievement

... • All of the answers provided are correct ...
PPT - Big Data Open Source Software and Projects
PPT - Big Data Open Source Software and Projects

... • CouchDB http://en.wikipedia.org/wiki/CouchDB http://couchdb.apache.org/ is written in Erlang. • Couch is an acronym for cluster of unreliable commodity hardware • Unlike in a relational database, CouchDB does not store data and relationships in tables. – Instead, each database is a collection of i ...
< 1 ... 207 208 209 210 211 212 213 214 215 ... 459 >

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.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report