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Topic: Data integrity

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	DataLever: Data Integrity, Data Quality, Data Integration, CRM, Business Intelligence, CASS Certification, Geocoding (Site not responding. Last check: 2007-10-25)
		Data integrity problems cost businesses more than 600 billion dollars each year.
		Poor data quality is the number-one cause for the failure of high profile and high-cost IT projects such as CRM, business intelligence, and supply-chain management.
		But data integrity involves more than just data cleansing, deduplication, householding, CASS certification, and geocoding.
	www.datalever.com (215 words)

	Relational Model: Data Integrity (Site not responding. Last check: 2007-10-25)
		Data integrity means, in part, that you can correctly and consistently navigate and manipulate the tables in the database.
		The entity integrity rule states that the value of the primary key can never be a null value (a null value is one that has no value and is not the same as a blank).
		The referential integrity rule states that if a relational table has a foreign key, then every value of the foreign key must either be null or match the values in the relational table in which that foreign key is a primary key.
	www.utexas.edu /its/windows/database/datamodeling/rm/rm5.html (193 words)

	Ensuring Data Integrity in Storage: Techniques and Applications
		In this section we classify integrity assurance mechanisms into three main types, based on their goals: those that perform preventive steps so as to avoid specific types of integrity violations; those that perform integrity checks and detect violations; and those that are capable of recovering from damage once a violation is detected.
		Data corruption is an important symptom of a disk failure and disks that are not fail-stop in nature could still continue to operate after silently corrupting the data they store.
		Data integrity assurance techniques at the file system level generally operate at a page granularity, as the smallest unit of data read from the disk by a file system is usually a page.
	www.fsl.cs.sunysb.edu /docs/integrity-storagess05/integrity.html (10130 words)

	TEA - Data Integrity Monitoring
		The purpose of the data integrity monitoring function is to monitor the integrity of data submitted by school districts and used in the state's accountability rating and performance-based monitoring (PBM) systems, including student assessment data, leaver/dropout data, and school discipline data.
		Data integrity responsibilities within the division include review and follow-up with districts or campuses that have been identified for potential data inaccuracies, data anomalies, or data irregularities.
		If data integrity concerns are identified for a district or campus, the TEA may implement interventions or sanctions to promote resolution of reporting inaccuracies.
	www.tea.state.tx.us /pmi/datamon (626 words)

	Data Integrity \| Database Solutions for Microsoft Access \| databasedev.co.uk
		Referential Integrity is important as it ensures that the database contains valid and usable data and records by preserving the connections between related tables.
		Referential Integrity is enforced at the database level, in that it controls the integrity of the data between tables.
		Data types may vary by RDBMS, however in general they will be pretty much the same; usually, you will also be able to create custom data types through code.
	www.databasedev.co.uk /data_integrity.html (1766 words)

	Data Integrity Specialization Report
		Data integrity is often analogous to "fitness for use" which means data must be appropriate for a particular application.
		The data integrity issue we had to consider here was that we were not allowed to modify data of the persons, such as age, sex, and telephone numbers.
		Data integrity is important and should be one of the major considerations in a software project.
	www.d.umn.edu /~kvanhorn/cs/cs5529/dataintegrity.html (1802 words)

	MySQL AB :: Guide to Data Integrity, Availability and Security
		DBAs, architects, developers and business managers who are building business-critical applications need to be sure that their database systems have complete data integrity, availability and security.
		These three factors determine the overall level of "data assurance" that your data is accurate, available at required service levels and safe from human and technology threats.
		This paper discusses the three areas of data integrity, availability and security and outlines the features and capabilities of MySQL that help to improve data assurance and eliminate risks.
	www.mysql.com /it-resources/white-papers/integrity.php (128 words)

	Data integrity - Wikipedia, the free encyclopedia
		Another aspect of data integrity is the assurance that data can only be accessed and altered by those authorized to do so.
		Often such integrity is ensured by use of a number referred to as a Message Integrity Code or Message Authentication Code.
		Specifically, data integrity in a relational database is concerned with three aspects of the data in a database:
	en.wikipedia.org /wiki/Data_integrity (174 words)

	Maintaining Data Integrity (Site not responding. Last check: 2007-10-25)
		Oracle does not permit declarative referential integrity constraints to be defined across nodes of a distributed database (in other words, a declarative referential integrity constraint on one table cannot specify a foreign key that references a primary or unique key of a remote table).
		When a constraint is disabled, the rule defined by the constraint is not enforced on the data values in the columns included in the constraint; however, the definition of the constraint is retained in the data dictionary.
		To enforce the rules defined by integrity constraints, the constraints should always be enabled; however, in certain situations, it is desirable to disable the integrity constraints of a table temporarily for performance reasons.
	www.csee.umbc.edu /help/oracle8/server.815/a68003/01_05dta.htm (5740 words)

	Ethical Software by Alex Bunardzic » The Myth Of Data Integrity (Site not responding. Last check: 2007-10-25)
		Data integrity is one of those idealistic formal criteria that sound and look great on the drawing board, but tend to lose their street appeal as soon as they get implemented and the rubber meets the road, so to speak.
		Data integrity thus means that when things break, we can recover them.
		There is nothing wrong with describing certain data integrity rules in the database, providing that we fully understand how those rules map onto the business requirements, and also providing that the business requirements are validly understood and presented in the first place.
	jooto.com /blog/index.php/2005/11/01/the-myth-of-data-integrity (6106 words)

	MySQL AB :: Guaranteeing Data Integrity with MySQL 5.0
		Because such things are the database's responsibility, it is important that the underlying engine act in ways that preserve the integrity and validity of the data.
		Most hard-core database professionals expect a database to validate incoming data and reject any data that is of the wrong datatype or data that violates certain data integrity rules.
		So in the above example, the string data targeting column one in our table gets converted to a zero (the default value for numeric columns), the numeric data targeting the varchar column goes in as is, and the bad date gets converted to be a zero-filled date value.
	dev.mysql.com /tech-resources/articles/mysql-data-integrity.html (1499 words)

	MAINTAINING DATA INTEGRITY
		There are hazards that can compromise file integrity when using features of microcomputer operating systems to transfer or copy data and programs.
		In each case below, realize that reliability of the remote location of files as well as their companion data channels (e.g., modems) may be unknown and may in fact be considerably less reliable than the file media you are using locally.
		Example: copy data files from C:\XDATA to floppy disk in drive A: Example: copy all files from folder (subdirectory) C:\XDATA to floppy disk in drive A: The /V option causes the copy command to compare source files and target files and to retry the copy if they are not identical.
	ftp.aset.psu.edu /pub/ger/documents/DataIntegrity.htm (2646 words)

	Data Integrity
		Datatypes can be used to enforce data integrity because the data entered or modified must conform to the type specified for the object.
		A constraint is a property assigned to a table or column within a table that prevents invalid data values from being entered in the specified column(s).
		Referential integrity ensures that key values are consistent across the related tables.When referential integrity is enforced, SQL Server prevents users from adding records to a related table if there is no associated record in the primary table.
	www.howtoadvice.com /Preview/Aebxfjr (1212 words)

	Data organizing and documenting, project management, business analysis and more. (Site not responding. Last check: 2007-10-25)
		Data organizing and documenting, project management, business analysis and more.
		Data Integrity Associates is an association of data professionals who value the importance of appropriate, clean, and reliable data.
		Her personal mission is to provide quality data for successful customer relationship management.
	www.data-integrity.biz /who.php (180 words)

	What is data integrity? - A Word Definition From the Webopedia Computer Dictionary
		Errors that occur when data is transmitted from one computer to another
		There are many ways to minimize these threats to data integrity.
		Describes the many ways that data can be corrupted without the corruption being detected.
	www.webopedia.com /TERM/D/data_integrity.html (546 words)

	Data Integrity (Site not responding. Last check: 2007-10-25)
		They accepted the command and the data for the command, gave channel end to the CPU and then moved the command and data to the remote unit, where it was executed against the device.
		This technique meant that the data integrity of an I/O operation was intact, because the operating system received the exact status as presented by the device or control unit and all of the error detection and recovery software provided by the vendor could be used to recover from the error, if one occurred.
		The customer and the channel extension vendor must understand when there may be potential data integrity issues in their configuration and insure that important data is not lost.
	www.storagetek.com /pdfs/dataint.html (3181 words)

	Data corruption - Wikipedia, the free encyclopedia
		Data corruption refers to errors in computer data that occur during transmission or retrieval, introducing unintended changes to the original data.
		When data corruption behaves as a Poisson process, where each bit of data has an independently low probability of being changed, data corruption can generally be detected by the use of checksums, and can often be corrected by the use of error correcting codes.
		If an uncorrectable data corruption is detected, procedures such as automatic retransmission or restoration from backups can be applied.
	en.wikipedia.org /wiki/Integrity_(computing) (286 words)

	DBAzine.com: Assuring Data Integrity in DB2
		Automatically enforcing DB2 data integrity is usually a wise choice of action because it offloads such work from application programs.
		RI defines the integrity and usability of a relationship by establishing rules that govern that relationship.
		If the same data integrity rule can be achieved using a check constraint or a trigger, favor using the check constraint.
	www.dbazine.com /db2/db2-mfarticles/mullins1 (3498 words)

	Ensure Data Integrity with IP Hiding from Anonymizer
		Web administrators can display misleading information or block access to their information when they detect competitors visiting their site.
		Learn how Anonymizer solutions protect your online identity and ensure data integrity when conducting online research and web harvesting activities.
		Internet protection is a must for business security and data integrity.
	www.anonymizer.com /enterprise (546 words)

	@Data Integrity@
		Not only could parts of the application fail to adequately check all of the incoming data, but data which is loaded "via the backdoor" (such as during migration of legacy data) could easily compromise the integrity of the database.
		OLTP application database must be periodically validated to ensure that they are enforcing data integrity.
		Likewise, whenever data leaves a purchased OLTP application, it must be checked for data integrity.
	www.itap.purdue.edu /ea/data/standards/dintegrity.cfm (532 words)

	Xintegrity Professional - Detect registry changes, file changes, security permissions changes, directory structure ...
		Xintegrity Professional is an advanced data integrity monitoring and modification detection solution.
		Xintegrity Professional will detect files and folders that have been added or removed from your system, files and folders that have been moved to the recycle bin, and files and folders that have been created then moved to the recycle bin between database checks.
		Alternate Data Streams which cannot be seen with Explorer are detected by Xintegrity Professional.
	www.xintegrity.com /introduction.html (646 words)

	Data integrity and PKI
		This is a consequence of a necessary property of cryptographic hash algorithms and signature algorithms; any change in the input data leads to a large, unpredictable change in the output with very high probability.
		In other words, if the data has changed (either by accident, or by deliberate manipulation) between "there" and "here" or between "then" and "now," the signature will fail to verify, and the loss of integrity will be obvious to the recipient.
		The PKI service of integrity for this second technique, then, is that of putting in place the mechanisms to achieve this key sharing when necessary.
	searchsecurity.techtarget.com /tip/1,289483,sid14_gci532683,00.html (668 words)

	BigAdmin Feature Article: ZFS, Sun's Cutting-Edge File System (Part 1: Storage Integrity, Security, and Scalability) (Site not responding. Last check: 2007-10-25)
		If the machine were to suffer a power outage in the middle of a data write, no corruption occurs because the pointer to the "good" data is not moved until the entire write is complete.
		ZFS then checksums the other copy of the data, finds it to be valid, and resilvers the bad block on the corrupted side of the mirror instead of panicking because of data corruption.
		While data security and integrity is paramount, a file system must also perform well and stand the test of time, otherwise it won't see much use.
	www.sun.com /bigadmin/features/articles/zfs_part1.scalable.html (2346 words)

	QAS Address Validation Software for Data Integrity, Data Quality & Address Verification Initiatives
		After installing a data integrity solution from QAS, our customers have seen reductions in returned mail, increases in call center efficiency and more successful first-time delivery of the mail and packages they send.
		In addition, address verification software from QAS can help solve data quality issues across multiple departments in almost any organization.
		Better data integrity, decreases in address correction charges and reductions in returned mail.
	www.qas.com /index.htm (313 words)

	Data Integrity Services
		Veritas resolved our data integrity issues through their knowledge and experience with seismic surveys and datasets available to the oil and gas industry.
		If the wells you have loaded in your workstation have been calculated using a different grid version than you are using in your workstation, you could also see errors of up to 50 meters.
		If you have GPS (Global Positioning System) data that have not been validated, you could have errors of up to 200 meters.
	www.veritasdgc.com /bins/content_page.asp?cid=5-346-347-414-1847 (281 words)

	NTFS.com Data Integrity and Recoverability with NTFS.Recovery Concepts
		NTFS ensures the integrity of all NTFS volumes by automatically performing HDD recovery operations the first time a program accesses an NTFS volume after the computer is restarted following a failure.
		However, user data can be lost because of a system failure or a bad sector.
		If the error occurs during a write, NTFS writes the data to the new cluster, and no data is lost.
	www.ntfs.com /data-integrity.htm (572 words)

	Data Integrity
		Transactions, which fail such checks, must either be (a) rejected with a notification of the rejection sent to the submitter (b) corrected and resubmitted or (c) suspended pending further investigation.
		All information included in the Purdue University data warehouse must be accompanied by metadata describing the origin, sensitivity classification, reliability, and the date of most recent revision.
		The metadata for the data warehouse should contain background information that will allow those using the warehouse to determine the information's relevance for specific decision-making purposes.
	www.purdue.edu /securepurdue/standards/dataIntegrity.cfm (486 words)

	Data Integrity
		The conditions under which data was collected vary from one census to the next and can range from the competency of the census enumerator to the archival conditions.
		The recorded age data from the schedules is not terribly significant to me since I was able to access death certificates to verify birth dates.
		An electronic record might be the means by which a future relative verifies a deceased family member's existence.
	www.colorado.edu /Libraries/govpubs/colonumb/debbie/integrty.htm (1583 words)

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