Extended Tuple Constraint Type in Relational and XML Data Model

Vidaković, Jovana; Ristić, Sonja; Kordić, Slavica; Luković, Ivan

doi:10.1145/3136273.3136294

Cited by 1 publication

(7 citation statements)

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“…The Example 1 illustrates the usage of tuple constraint. The following examples are also given in [1].…”

Section: Definitionmentioning

confidence: 99%

“…In this paper we propose a classification of integrity constraint types in the relational data model in order to determine more closely the set of complex integrity types. The classification is made to generalize results presented in [3] and [1]. In [3] we have explained the need for introducing the extended referential integrity constraint (ERIC) type, as a complex constraint type, in the relational and XML data model.…”

Section: Introductionmentioning

confidence: 99%

“…We also specified the ERIC type in the XML data model and proposed two techniques for implementation of ERIC in XML DBMSs. In [1] we have expanded our research on the extended tuple constraint (ETC) type that can also be characterized as a complex integrity constraint type. We defined the ETC in the relational data model, described two ways for its implementation in RDBMSs, and proposed ETC's specification and validation in the XML data model.…”

Section: Introductionmentioning

confidence: 99%

“…We defined the ETC in the relational data model, described two ways for its implementation in RDBMSs, and proposed ETC's specification and validation in the XML data model. This paper is the extended version of the paper [1].…”

Section: Introductionmentioning

confidence: 99%

“…Here we use ETC type to illustrate how the constraint type characteristics given in [2] can be applied to define ETC by means of the XML data model and how to enforce it in an XML database. We extend [1] with the explanation of the extended XML Schema and the actions in case of violation of the constraint. New sections 5, 6 and 7 are added and they contain the description of the code generator, which can transform constraint specifications into error free XQuery functions or triggers for constraint validation in the XML data model.…”

Section: Introductionmentioning

confidence: 99%

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Extended tuple constraint type as a complex integrity constraint type in XML data model - definition and enforcement

et al. 2018

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A database management system (DBMS) is based on a data model whose concepts are used to express a database schema. Each data model has a specific set of integrity constraint types. There are integrity constraint types, such as key constraint, unique constraint and foreign key constraint that are supported by most DBMSs. Other, more complex constraint types are difficult to express and enforce and are mostly completely disregarded by actual DBMSs. The users have to manage those using custom procedures or triggers. eXtended Markup Language (XML) has become the universal format for representing and exchanging data. Very often XML data are generated from relational databases and exported to a target application or another database. In this context, integrity constraints play the essential role in preserving the original semantics of data. Integrity constraints have been extensively studied in the relational data model. Mechanisms provided by XML schema languages rely on a simple form of constraints that is sufficient neither for expressing semantic constraints commonly found in databases nor for expressing more complex constraints induced by the business rules of the system under study. In this paper we present a classification of constraint types in relational data model, discuss possible declarative mechanisms for their specification and enforcement in the XML data model, and illustrate our approach to the definition and enforcement of complex constraint types in the XML data model on the example of extended tuple constraint type.

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“…The Example 1 illustrates the usage of tuple constraint. The following examples are also given in [1].…”

Section: Definitionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%