Encyclopedia: Entity integrity
In a relational database, entity integrity is a property that ensures that no records are duplicated and that no attributes that make up the primary key are NULL. It is one of the properties necessar...
en.wikipedia.org/wiki/Entity_integrity
An example of a database that has not enforced referential integrity. Entity integrity · Propagation constraint · Dangling pointer · Domain/key normal...
en.wikipedia.org/wiki/Referential_integrity en.wikipedia.org/wiki/Referential_integrity
This page describes the term referential integrity and lists other pages on the Web where you can find additional information. For example, suppose Table B has a foreign key that points to a field in Table A. Referential integrity would prevent you from adding a record to Table B that cannot be linked to Table A.
www.webopedia.com/TERM/R/referential_integrity.html www.webopedia.com/TERM/R/referential_integrity.html
Database Solutions for Microsoft Access - Entity Integrity: Entity Integrity ensures that there are no duplicate records within the table and that the field...
www.databasedev.co.uk/entity_integrity.html www.databasedev.co.uk/entity_integrity.html
Entity integrity defines a row as a unique entity for a particular table. Entity integrity enforces the integrity of the identifier columns or the primary...
msdn.microsoft.com/en-us/library/ms184276.aspx
To identify each row in a table, the table must have a primary key. The primary key is a unique value that identifies each row. This requirement is called the entity integrity constraint. For more information on primary keys and entity integrity, see the Informix Guide to Database Design and Implementation.
www.pacs.tju.edu/informix/answers/english/docs/dbdk/is4... www.pacs.tju.edu/informix/answers/english/docs/dbdk/is40/sqlt/067.html
Nov 2, 2005 For more information on primary keys and entity integrity, see the IBM Informix: Database Design and Implementation Guide .
publib.boulder.ibm.com/infocenter/ids9help/topic/com.ib... publib.boulder.ibm.com/infocenter/ids9help/topic/com.ibm.sqlt.doc/sqltmst157.htm
DB2 ensures referential integrity between your tables when you define referential constraints.
publib.boulder.ibm.com/infocenter/dzichelp/v2r2/topic/c... publib.boulder.ibm.com/infocenter/dzichelp/v2r2/topic/com.ibm.db29.doc.intro/db2z_integrity.htm
The following table includes the important elements of Referential Integrity: Key declarations The stipulation that certain attributes form a candidate key for a given entity set. The set of legal insertions and updates is constrained to those that do not create two entities with the same value on a...
teradata.uark.edu/research/wang/integrity.html teradata.uark.edu/research/wang/integrity.html
CiteSeerX - Document Details (Isaac Councill, Lee Giles): Entity and referential integrity are the most fundamental constraints that any relational database should satisfy. Entity and referential integrity are the most fundamental constraints that any relational database should satisfy. We re-examine these...
citeseer.ist.psu.edu/142572.html
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