No public access
doctoral thesis
METADATA REPOSITORY MODEL FOR DATA WAREHOUSE SCHEMA EVOLUTION AND INTEGRATION WITH MASTER DATA MANAGEMENT SYSTEM

Danijela Jakšić (2017)
University of Rijeka
Department of Informatics
Metadata
TitleMODEL REPOZITORIJA METAPODATAKA ZA EVOLUCIJU SHEME SKLADIŠTA PODATAKA TE INTEGRACIJU SA SUSTAVOM ZA UPRAVLJANJE MATIČNIM PODACIMA
AuthorDanijela Jakšić
Mentor(s)Vladan Jovanović
Abstract
Skladište podataka (SP) se u današnje vrijeme nalazi u iznimno dinamičnom poslovnom okruženju. S jedne strane imamo brojne (heterogene) izvore podataka koji su podložni čestim promjenama podataka i strukture, dok s druge strane imamo brojne promjene u informacijskim zahtjevima koje postavljaju poslovni korisnici. Višedimenzionalna shema (VDS) u svakom trenutku mora moći usvojiti promjene iz izvora podataka te im se prilagoditi, kao i zadovoljiti korisničke zahtjeve za informacijama, što je iznimno složen zadatak. Problem koji se istražuje kod evolucije skladišta podataka jest pamćenje promjena opsega te strukture podataka i meta-podataka, u dužem vremenskom periodu. Akademska zajednica je do danas napravila određene korake prema rješavanju ovoga problema, no uvijek ima prostora za poboljšanje postojećih istraživanja, kao i za osmišljanje novih rješenja. Cilj ovog doktorskog istraživanja bio je razviti model repozitorija meta-podataka (MDV) koji se zasniva na Data Vault (DV) metodi za modeliranje baza podataka. Ovako definiran repozitorij meta-podataka služi za integraciju skladišta podataka (SP) i sustava za upravljanje matičnim podacima (UMP) te za praćenje i upravljanje promjenama u SP/UMP podacima i meta-podacima, kao i u njihovim shemama. Na ovaj način evolucija sheme skladišta podataka provodi se isključivo uz proširenje postojeće sheme i bez gubitka informacija. Također, složenost provedbe evolucije SP/UMP sheme je smanjena u odnosu na tradicionalne pristupe zasnovane na relacijskom modelu, a repozitorij zasnovan na MDV modelu služi kao proširenje tradicionalnog relacijskog sistemskog kataloga. U svrhu izgradnje praktičnog prototipa i testiranja predloženog rješenja razvijen je trajni i obuhvatni model repozitorija meta-podataka za integraciju i praćenje promjena shema SP i UMP, sistematiziran je formalni konačni skup osnovnih promjena nad shemom SP i UMP, definirana je formalna algebra za održavanje SP i UMP sheme te je razvijena arhitektura integriranog SP i UMP. Na kraju je razvijen i sam praktični prototip koji služi za empirijsku verifikaciju predloženog rješenja.
Keywordsdata warehouse master data management relational model data vault model data evolution schema evolution metadata metadata repository system catalog
Parallel title (English)METADATA REPOSITORY MODEL FOR DATA WAREHOUSE SCHEMA EVOLUTION AND INTEGRATION WITH MASTER DATA MANAGEMENT SYSTEM
Committee MembersMile Pavlić (committee chairperson)
Mario Radovan (committee member)
Alen Jakupović (committee member)
GranterUniversity of Rijeka
Lower level organizational unitsDepartment of Informatics
PlaceRijeka
StateCroatia
Scientific field, discipline, subdisciplineSOCIAL SCIENCES
Information and Communication Sciences
UDK004
GENERALLY
Computer science and technology. Computing. Data processing
Study programme typeuniversity
Study levelpostgraduate
Study programmeInformatics
Academic title abbreviationdr.sc.
Genredoctoral thesis
Language Croatian
Defense date2017-02
Promoted date2017-02
Parallel abstract (English)
Data Warehouse (DW) environment nowadays is an extremely dynamic one. On the one hand we have a number of (heterogeneous) data sources that are subject to frequent changes of data and structure, while on the other hand we have the frequent changes in the information requirements (set by business users). DW has an extremely complex task it must at all times be able to adapt to changes from data sources as well as to satisfy user's requests for information. This problem that we explore here is known and recognized in literature as a DW evolution problem tracking and storing the scope and structure changes of data and metadata for a very long time period. The academic community has taken some steps towards solving this problem but there is always some room for an improvement of the existing research, as well as for a development of new solutions. The goal of this doctoral thesis was to develop a metadata repository model (MDV) which is based on the Data Vault (DV) method for database modeling. Thus defined metadata repository model is used for integrating a data warehouse (DW) system and a master data management (MDM) system and for tracking and managing changes in the DW/MDM data and metadata, as well as in their schemas. In this way, a DW schema evolution is carried out only with the expansion of the existing schema and without loss of information. Also, the complexity of the DW schema evolution implementation is decreased compared to traditional approaches based on the relational model. Additionally, MDV repository serves as an extension of traditional relational database system catalog. In order to build a practical prototype and to test the proposed solution, a permanent and comprehensive metadata repository model for integration and tracking of DW/MDM data and schema changes was developed, a final set of fundamental changes over the DW/MDM schema was systematized, a formal algebra for DW/MDM schema maintenance was develped, an architecture of integrated DW/MDM was proposed, and a prototype of our dual DW/MDM solution was developed and empirically verified
Parallel keywords (Croatian)skladište podataka upravljanje matičnim podacima relacijski model data vault model evolucija podataka evolucija sheme meta-podatak repozitorij meta-podataka sistemski katalog
Extent318 str;
Versionaccepted version
Resource typetext
Access conditionNo public access
Noteaccepted version
URN:NBNhttps://urn.nsk.hr/urn:nbn:hr:195:329578
CommitterLea Lazzarich