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Panji Wisnu Wirawan
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Agenda
Model DataPenyusunan Model DataData Administration
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Model Data
Model pola, rencana,reprenstasi/miniatur, atau deskripsi
yangdidesain untuk menunjukkan strukturatau kerja dari obyek,
sistem dankonsep.Model data representasi entitas atau
obyek yang menunjukkan struktur kerjasistem informasi.
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Model Data
Pemodelan data fase-2 informationengineering (IE).Hasil sebuah
desain yang mencerminkandata yang diperlukan organisasi.Macam model
data :
Relational
Object RelationalDimensional
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Model Data
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Model Data
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Model Data
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Model Data
Keuntungan model data :Memberikan gambaran menyeluruhmengenai
data yang dibutuhkan dalam
organisasi/perusahaan.Memberikan kemudahan
dalamberkomunikasi.
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Penyusunan Model Data
Top -do w n app roach
Dibagi menjadiConceptual data modelLogical data modelPhysical
data model
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Conceptual Data Model
Conceptual data model a high-levelrepresentation of business
informationand its sources and endpoints and theevents that occur
in all steps in between includes an Entity Relationship
Diagram(ERD)
created without consideration ofdatabase concepts
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Conceptual Data Model
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Logical Data ModelLogical data model The logical design ofa
database involves taking the businessinformation discovered in a
CDM andtranslating it into an empirical layout of the
data, usually in a relational style.Includes entities/tables,
attributes /columns /fields and relationships.Uses business names
for attributes.
Is independent of technology (platform,DBMS).Is normalized to
4th normal form
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Physical Data Model
Physical Data Model It describes anabsolute design of the
databaseimplementation. A data architect, or
sometimes a database administrator,completes this stage.Includes
tables, columns, keys, data
types, validation rules, databasetriggers, stored procedures,
domains,and access constraints.
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Physical Data Model
Uses abbreviated column names limitedby the database management
system(DBMS)
Includes primary keys and indices forfast data access.May be
de-normalized to meet
performance requirements
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Data Administration (DA)
Tujuan meningkatkan pemahamandan manajemen data.Bertanggung
jawab mengembangkandan memelihara standar manajemendata dan
prosedur, &membuat panduandan metode untuk berbagi-pakai
data.
Data Administrator berhak me-reviewdan menyetujui desain model
data.
