Dataremanence is the residual representation of data that remains even after attempts have been made to remove or erase the data. This residue may result from data being left intact by a nominal file deletion operation, by reformatting of storage media that does not remove data previously written to the media, or through physical properties of the data storage device storage medium that allow previously written data to be recovered. Dataremanence may make inadvertent disclosure of information sensitivity ... to counter dataremanence. These techniques are classified as Clearing clearing , Purging purging ... of dataremanence. Causes Many operating system s, file manager s, and other software provide a facility ... gives further explanations for causes of dataremanence. Countermeasures Main Data erasure .... Specific methods Overwriting A common method used to counter dataremanence is to overwrite the storage ... data before it is stored on the medium may mitigate concerns about dataremanence. If the Key cryptography decryption key is strong and carefully controlled i.e., not itself subject to dataremanence ... considered the most certain way to counter dataremanence. However, the process is generally time ... to counter dataremanence by Overwriting overwriting may not be successful in such situations, as data ... in RAM Dataremanence has been observed in static random access memory SRAM , which is typically considered ... dataremanence in static RAM author Sergei Skorobogatov publisher University of Cambridge ... circuits. A study found dataremanence in DRAM with data retention of seconds to minutes ... PDF ref rp page 12 It is also possible to prevent dataremanence in RAM by running a memory testing ... systems. Notes References References cite book title A Guide to Understanding DataRemanence in Automated ... Remanence Category Data security Category Computer storage es Persistencia de datos ru ... of data throughout the data s life cycle, and persistence of data in memory that is typically considered ... more details
About magnetic remanence the data storage term DataremanenceRemanence or remanent magnetization is the magnetization ..., when a magnet is magnetized it has remanence. ref Strictly speaking, it is still in the Earth s field, but that has little effect on the remanence of a hard magnet . ref It is also the magnetic memory ... be removed by degaussing . Sometimes the term retentivity is used for remanence measured in units ... pubs reports pub54 glossary.html ref Types of remanence Saturation remanence The default definition for remanence is the magnetization remaining in zero field after a large magnetic field is applied ... of the remanence. In physics this measure is converted to an average magnetization the total ... be distinguished from other kinds of remanence it is called the saturation remanence or saturation isothermal remanence SIRM and denoted by math M rs math . In engineering applications the residual ... magnetic field as in Fig. 1 . This is represented by a flux density math B R math . This value of remanence ... magnetic field they can produce. Neodymium magnets , for example, have a remanence approximately ... for grain oriented electrical steel math B R math denotes remanence and math H C math is the coercivity . Isothermal remanence Often a single measure of remanence does not provide adequate information ... or subtract small increments of remanence. One way of doing this is to first Magnet Magnetization and demagnetization ... it. This remanence, denoted by math M r H math , depends on the field. ref name Wohlfarth Harvnb Wohlfarth 1958 ref It is called the initial remanence ref Harvnb McCurrie Gaunt 1966 ref or the isothermal ... by first giving the magnet a saturation remanence in one direction and then applying and removing ... remanence or dc demagnetization remanence and is denoted by symbols like math M d H math , where math ... of remanence can be obtained by demagnetizing the saturation remanence in an ac field. This is called ac demagnetization remanence or alternating field demagnetization remanence and is denoted by symbols ... more details
data processing DataremanenceData set Data warehouse Database Datasheet Environmental data rescue ...dablink For data in a computer science context, see Data computing . For other senses of the word, see Data disambiguation . See also datum , a disambiguation page. pp move indef Editors please keep the count mass discussion and etymology in the body, not the intro. The term data refers to qualitative or quantitative attributes of a variable mathematics variable or set of variables. Data plural of datum are typically the results of measurements and can be the basis of graph data structure graph s, image s, or observations of a set of variables. Data are often viewed as the lowest level of abstraction from which information and then knowledge are derived. Raw data , i.e. unprocessed data, refers ... that collect information to convert physical quantities into symbols. Etymology The word data pron ... . It is derived from ancient Persian word data . In discussions of problems in geometry , mathematics , engineering , and so on, the terms givens and data are used interchangeably. Also, data is a representation of a fact, figure, and idea. Such usage is the origin of data as a concept in computer science data are numbers, words, images, etc., accepted as they stand. Usage in English Weasel date ... data are measured. Any measurement or result is a datum , but data point is more common, ref cite ... . Both datums see usage in datum geodesy datum article and the originally Latin plural data are used as the plural of datum in English, but data is commonly treated as a mass noun and used with a verb ... the data from the experiment . This usage is inconsistent with the rules of Latin grammar and traditional English These are all the data from the experiment . Even when a very small quantity of data is referenced One number, for example the phrase piece of data is often used, as opposed to datum ... generic.xsl& publisher IEEE Computer Society ref allow usage of data as either a mass noun or plural ... more details
otheruses Data disambiguation Debt, AIDS, Trade, Africa or DATA was a multinational Non governmental organization non government organization founded in January 2002 in London by U2 s Bono along with Robert Sargent Shriver III Bobby Shriver and activist s from the Jubilee 2000 Drop the Debt campaign. DATA was created for the purpose of obtaining social equality equality and justice for Africa through debt relief , adjusting trade rules which burden Africa, eliminating the AIDS in Africa African AIDS epidemic, strengthening democracy , more accountability by the wealthiest nations and African leaders and Transparency humanities transparency towards the people. In 2007, DATA and Bono were jointly awarded the National Constitution Center s 2007 Liberty Medal for their groundbreaking efforts to address the AIDS crisis and extreme poverty in Africa. Start up funds came from the Bill & Melinda Gates Foundation , financier George Soros , and technology entrepreneur Edward W. Scott . ref cite news url http www.time.com time printout 0,8816,1142270,00.html title The Constant Charmer author Josh Tyrangiel date 2005 12 19 work Time Magazine ref In 2007, DATA and the ONE Campaign decided to join forces, and in January 2008, they formally merged under the name ONE. ref cite news url http www.reuters.com article idUSN2953856520071029 title Bono s U.S. based anti poverty groups to merge author Lesley Wroughton date 2007 10 29 work Reuters ref DATA received support from the Christian rock Alternative rock bands Switchfoot and Third Day . References references External links http www.one.org ONE official site Category International nongovernmental organizations Category HIV AIDS in Africa Category Organizations founded by Bono int org stub de Debt, AIDS, Trade in Africa it DATA vi DATA ... more details
Infobox software name Data Shredder logo caption screenshot developer CBL Datenrettung latest release version 1.0.1 latest release date release date 2007 04 03 operating system Windows, MS DOS x86 language Multilingual genre Dataremanence Secure erase license Proprietary, freeware website http www.cbldatarecovery.com cbldatarecovery.com Data Shredder also known as CBL Data Shredder is a data destruction utility designed to Data erasure securely erase a hard disk or digital storage device, completely removing the data and making it Data recovery unrecoverable . The software utilizes an overwrite method of destroying data rather than other means of data destruction such as degaussing , physical destruction . Wiping standards class wikitable Windows Version DOS Version Linux Edition United States Department of Defense National Industrial Security Program 5220.22 M National Industrial Security ... Data Destruction and Demand Widespread need for secure data destruction meant that language variants ... Data Shredder as one of its must have security tools. ref http www.pcmag.com article2 0,2817,1841779,00.asp ... of data stored on hard drives a bigger concern of the general public. ref http www.pbs.org frontlineworld stories ghana804 video video index.html Ghana Digital Dumping Ground PBS Frontline, 2009 ref Data ... the step in the data recovery process. ref http www.tomshardware.com reviews saving data a head crash,1044 6.html Saving your data after a head crash What Happens with Customer Data? Tom s Hardware ref See also Dataremanence Computer recycling References reflist External links http ph.hardwarezone.com news view.php?cid 12&id 6027 CBL Data Recovery Offers Tool to Protect Users Privacy Hardwarezone ... 4 File Shredders to Make Deleted Data Unrecoverable http www.protectstar.com index.php?site en data shredder 2 5 pro ProtectStar Data Shredder 2.5 Professional for Microsoft Windows Data Erasure Category Data security ... more details
Data erasure also called Dataremanence Clearing data clearing or data wiping is a software based method of overwriting data that completely destroys all Dataremanence electronic data residing on a hard disk drive or other digital media . Permanent data erasure goes beyond basic file deletion commands, which only remove direct pointers to data disk sector s and make data recovery possible with common ..., data erasure eliminates the risk of dataremanence . Data erasure also bypasses the BIOS and operating ... books?id qji1ilg2 pAC&pg PA243 v onepage&q&f false Preview at Google Books . ref See also Dataremanence ..., data erasure removes all information while leaving the disk operable, preserving IT assets and the environment ... meaningless data onto all of a hard drive s sectors. There are key differentiators between data erasure and other overwriting methods, which can leave data intact and raise the risk of data breach or Data breach spill , identity theft and failure to achieve regulatory compliance. Many data eradication ... standards. Good software should provide verification of data removal, which is necessary for meeting certain standards. To protect data on lost or stolen media, some data erasure applications remotely destroy data if the password is incorrectly entered. Data erasure tools can also target specific data ... large volumes of confidential data. Social security numbers, credit card numbers, bank details, medical ... REV REV drives. Data breach Increased storage of sensitive data, combined with rapid technological change and the shorter lifespan of IT assets, has driven the need for permanent data erasure of electronic ... and loss, as well as that of other portable media, are increasingly common sources of data breaches. If data erasure does not occur when a disk is retired or lost, an organization or user faces that possibility that data will be stolen and compromised, leading to identity theft, loss of corporate reputation ... on average to recover when corporate data was lost or stolen. ref name breach cite web url http ... more details
paper on a similar topic. ref http www.cypherpunks.to peter usenix01.pdf DataRemanence in Semiconductor ...Data recovery is the process of salvaging data from damaged, failed, corrupted, or inaccessible Computer data storage Secondary storage secondary storage media when it cannot be accessed normally. Often the data are being salvaged from storage media such as hard disk drive s, storage tapes, CDs, DVDs ... . The most common data recovery scenario involves an operating system OS failure typically on a single ... valuable data files or copies of them on a different partition from the replaceable OS system files ... or a hard disk failure . In any of these cases, the data cannot be easily read. Depending on the situation ... disk recovery techniques ranging from software based recovery of corrupted data to hardware replacement ... failed permanently, and the focus is rather on a one time recovery, salvaging whatever data can be read ... file may be restored. Although there is some confusion over the term, data recovery may also be used in the context of Computer forensics forensic applications or espionage . Recovering data after ... tapes can simply break. Physical damage always causes at least some data loss, and in many cases the logical ..., costly data recovery companies are often employed to salvage important data. Recovery techniques Recovering data from physically damaged hardware can involve multiple techniques. Some damage can be repaired ... electronic failure will require data recovery in order to salvage its contents. Examples of physical ... data recovery companies have procedures that are highly technical in nature and are not recommended ... from logical non hardware damage Image Data loss of image file.JPG thumb Result of a failed data recovery from a Hard disk drive. Overwritten data See also Data erasure When data have been physically overwritten on a hard disk it is generally assumed that the previous data are no longer possible ... handle 2292 2310 , presented a paper that suggested overwritten data could ... more details
In the field of data management , data classification as a part of Information Lifecycle Management ILM process can be defined as tool for categorization of data to enable help organization to effectively answer following questions What data types are available? Where are certain data located? What access ... or application owners. IT staff is informed about the data value and on the other hand management usually application owners understands better to what segment of data centre has to be invested ..., legal discovery, and compliance with government regulations. Data classification is typically a manual ... the data. How to start process of data classification? First step is to evaluate and divide applications and data as follows Structured data statistically around 15 of data Generally describes proprietary data which can be accessible only through application or application programming interfaces API Applications that produce structured data are usually database applications This type of data usually brings complex procedures of data evaluation and migration between storage tiers Unstructured data all other data that cannot be categorized as structured around 85 Generally describes data files ... simple process of data classification criteria assignment Simple process of data migration between assigned segments of predefined storage tiers Basic criteria for unstructured data classification Time criteria is the simplest and most commonly used where different type of data is evaluated by time ... of advanced content classification algorithms are most advanced forms of unstructured data classification Basic criteria for structured data classification These criteria are usually initiated by application requirements such as Disaster recovery and Business Continuity rules Data centre resources ... Benefits of data classification Benefits of effective implementation of appropriate data classification can significantly improve ILM process and save data centre storage resources. If implemented ... more details
Unreferenced date March 2007 A data field is a place where you can store data . Commonly used to refer to a column in a database or a field in a data entry form or web form. The field may contain data to be entered as well as data to be displayed. See also wiktionary DataData dictionary Data element Data acquisition Data hierarchy Category Data management it Campo informatica ... more details
Data classification may refer to Data classification data management Data classification business intelligence Classification of data using machine learning algorithms, see classification machine learning Assigning a level of sensitivity to classified information In computer science , the data type of a piece of data See also Classification Categorization disambig ... more details
Wiktionary dataData consist of propositions that reflect reality, such as measurements or observations of a variable. Data may also refer to Data computing , in computer science, often distinguished from code or software Data Euclid , a book by ancient Greek mathematician Euclid Data moth , a moth genus Data Star Trek , a sentient android in the Star Trek universe Data URI scheme Data in The Goonies film character played by actor Jonathan Ke Quan Design and Technology Academy , a school in San Antonio, Texas, USA Data Records , a record label DATA may refer to DATA Debt, AIDS, Trade in Africa, a non governmental organization founded by Bono DATA band , a techno pop band created by Georg Kajanus DATA, a diarylpyrimidines diaryltriazine . A class of organic molecules DatA , the alias used for French touch artist David Guillon Durham Area Transit Authority , the public transit agency serving Durham, North Carolina , USA disambig da Data flertydig de Data el es Data desambiguaci n eu Datu argipena fr Data it Data ms Data nyahkekaburan nl Data no Data nn Data pt Data desambigua o simple Data sv Data ... more details
Unreferenced date December 2009 Orphan date December 2009 Data Auditing is the process of conducting a data audit to assess how fit for purpose a company s data is. This involves data profiling profiling the data and assessing the impact of data quality poor quality data on the organization s performance and profits. DEFAULTSORT Data Auditing Category Data management Category Data quality Tech stub ... more details
Data matrix can refer to Matrix mathematics A rectangular array of elements Data matrix statistics A matrix, generally of numbers, representing data used in statistical analysis Data matrix computer An encoded barcode. Data set A collection of data in tabular form dab ... more details
Unreferenced date December 2009 Dynamic data or transactional data denotes information that is asynchronously changed as further updates to the information become available. The opposite of this is persistent data , which is data that is infrequently accessed and not likely to be modified. Dynamic data is also different from streaming media streaming data , in that there is no constant flow of information. Rather, updates may come at any time, with periods of inactivity in between. See also Transaction data compsci stub DEFAULTSORT Dynamic Data Category Computer data ... more details
A data architect is a person responsible for ensuring that the data assets of an organization are supported ... should cover databases, data integration and the means to get to the data. Usually the data architect achieves his her goals via setting enterprise data standards. A Data Architect can also be referred to as a Data Modeler, although the role involves much more than just creating data models. The definition ..., and the principles governing its design and evolution ., where the data architect primarily focuses on the aspects related to data. In TOGAF the Open Group Architecture Framework http www.togaf.org ... over time. According to DAMA Data Management Association http www.dama.org , , Data Architect ... Certified Data Management Professional would have a wide range of such skills. Translating this to Data architecture helps defining the role of the data architect as the one responsible for developing and maintaining a formal description of the data and data structures this can include data definitions, data models, data flow diagrams, etc. in short metadata . Data architecture includes topics such as metadata management, business semantics, data modeling and metadata workflow management. A data architect s job frequently includes the set up a metadata registry and allows domain specific stakeholders to maintain their own data elements. Some fundamental skills of a Data Architect are Logical Data modeling Physical Data modeling Development of a data strategy and associated polices Selection of capabilities and systems to meet business information needs A Data Strategy enumerates the Data Policies each of which commit the organization to codifying a best practice. A policy may specify any one area of data standards data security or Information Assurance data retention or data stewardship. Data architects usually have experience in one or more of the following technologies Data Dictionary Data dictionaries Data warehouse Data warehousing Enterprise application integration Metadata ... more details
Master data , which may include reference data , is information that is key to the operation of business and is the primary focus of the Information Technology IT discipline of Master Data Management MDM . This key business information may include data about customers, products, employees, materials, suppliers, etc. which often turns out to be non transactional in nature. In this regard, master data can support transactional processes and operations, but its use is certainly not limited to such analytics reporting is another area greatly dependent on an organization s master data . Master data is often used by several functional groups and stored in different data systems across an organization and may or may not be referenced centrally therefore, the possibility exists for duplicate and or inaccurate master data. Thus Master Data is that persistent, non transactional data that defines a business entity for which there is, or should be, an agreed upon view across the organization. Master data and Master reference data Master data is also called Master reference data . This is to avoid confusion with the usage of the term Master data for original data , like an original recording see also Master Tape . Master data is nothing but unique data there is no duplicate values. Citation needed date January 2011 See also Master Data Management Customer Data Integration Product Information Management Category Data management de Stammdaten fr master data ... more details
Data format in information technology can refer to either one of Data type , constraint placed upon the interpretation of data in a type system Signal electrical engineering , a format for signal data used in signal processing Recording format , a format for encoding data for storage on a storage medium File format , a format for encoding data for storage in a computer file Container format digital , a format for encoding data for storage by means of a standardized audio video codecs file format Content format , a format for converting data to information Audio format , a format for processing sound audio data Video format , a format for processing video data Disambig simple Data format ... more details
Unreferenced date December 2010 In statistics , aggregate data describes data combined from several measurements. In economics , aggregate data or data aggregates describes high level data that is composed of a multitude or combination of other more individual data. in macroeconomics data such as the overall price level or overall inflation rate in microeconomics data of an entire sector of an economy composed of many firms, or of all households in a city or region. See also Aggregate disambiguation Category Statistical terminology statistics stub econ stub ... more details
Data retention defines the policies of persistent data and records management for meeting legal and business data archive data archival requirements. A data retention policy weighs legal and privacy concerns against economics and need to know concerns to determine both the retention time, archival rules, data formats, and the permissible means of storage, access, and encryption. Data retention issues plagued recovery of essential data of many early computer system s, notably the data recovery for the Viking lander . ref http nssdc.gsfc.nasa.gov nssdc news sept00 viking lander.html Data Recovery for Viking Lander , NASA , September 2000 ref See also Telecommunications data retention http wiki.openrightsgroup.org wiki Data Retention Open Rights Group s page on Data Retention References refs Category Computer data law stub computing stub no Datalagring ... more details
Unreferenced date October 2006 Data maintenance is the adding, deleting, changing and updating of binary data binary and high level computer file files , and the real world data associated with those files. Data can be maintained manually and or through an automated Computer program program , but at origination and translation delivery point must be translated into a binary representation for storage. Data is usually edited at a slightly higher level in a format relevant to the content of the data such as text, images, or scientific or financial information . It is also the backing up, storage and general up keep of this all this data in the long term. See also SCADA Data base dataData destruction Data governance Data management Information management Product Information Management DEFAULTSORT Data Maintenance Category Data management pt Manuten o de dados ... more details
Persistent Data denotes information that is infrequently accessed and not likely to be modified. The opposite of this is dynamic data also known as transactional data where information is asynchronously changed as further updates to the information become available. Updates to dynamic data may come at any time, with periods of inactivity in between. Category Computer data ... more details
Reference data are data describing a physical or virtual object and its properties. fact date April 2008 Reference data are usually described with nouns. fact date April 2008 Reference data is used in data management to define characteristics of an identifier that are used within other data centric processes. For example reference data within finance might be a product master or a security master. Typical reference data are Physical products, material, assets, customers, locations Virtual cost centers, planned buildings Reference data can change over time via transactions described in transaction data . E.g. a logistical transaction can change the location of an object, a financial transaction like adding tax can change the price of an object and a series of work transaction can change a virtual object like a planned building into a physical object. Master reference data A special type of reference data is master reference data these are reference data shared over a number of systems. Some master reference data are universal like the list of Country Countries and can be covered by a global standard in this case ISO 3166 1 . Master data and Master reference data Master reference data are sometimes called Master Data . This usage of the term Master data should be avoided, fact date April 2008 since Master data is also the term used for original data , like an original recording see also Master Tape . Master data is collected on a http www.polarlake.com reference data management introduction Data Management Platform . The platform enables the acquisition, management and distribution of vendor and internally sourced Reference Data. See also Data modeling Master Data Management Enterprise bookmarking Data architecture Transaction data Category Data management de Stammdaten ... more details
morefootnotes date August 2010 In Data governance Data Governance groups, responsibilities for data management .... Two functional titles commonly used for these roles are Data steward Data Steward and Data Custodian. Data Stewards are commonly responsible for data content, context, and associated business rules. Data Custodians are responsible for the safe custody, transport, storage of the data and implementation ..., http www.cmu.edu iso governance roles data custodian.html ref ref Policies, Regulations and Rules Data Management Procedures REG 08.00.3 Information Technology , , NC State University, http www.ncsu.edu policies informationtechnology REG08.00.3.php ref . Simply put, Data Stewards are responsible for what is stored in a data field, while Data Custodians are responsible for the technical environment and database structure. Common job titles for data custodians are Database Administrator DBA , Data Modeler, and ETL Developer. Data Custodian Responsibilities A data custodian ensures Access to the data is authorized and controlled Data stewards are identified for each data set Technical processes sustain data integrity Processes exist for data quality issue resolution in partnership with Data Stewards Technical controls safeguard dataData added to data sets are consistent with the common data model Versions of Master Data are maintained along with the history of changes Change management practices are applied in maintenance of the database Data content and changes can be audited See also Data governance Data steward References references references Related Links Establishing data stewards ... v08n03 Features EstablishingDataStewards.aspx A Rose By Any Other Name Titles In Data Governance , by Anne ... titles in data governance DEFAULTSORT Data Custodian Category Information technology governance Category Data management Category Knowledge representation Category Library science Category Metadata Category Technical communication ar cs Metadata da Metadata de Data Steward et Metaandmed ... more details
Data binding is a general technique that binds two data information sources together and maintains them in sync. This is usually done with two data information sources with different types as in XML data binding . However, in UI data binding , data and information objects of the same type are bound together e.g. Java UI elements to Java objects . If the binding has been made in the proper manner, then, each data change is reflected automatically by the elements that are bound to the data. The term data binding is also used in case where an outer representation of data in an element changes, and the underlying data is automatically updated to reflect this change. As an example, a change in a text box code TextBox code element could modify the underlying data value. ref http msdn.microsoft.com en us library ms752347.aspx what is data binding What is data binding? ref See also XML data binding UI data binding References references Categories DEFAULTSORT Data Binding Category Data management Interwikies ja pt Liga o de dados ... more details
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