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Model Data

Panji Wisnu Wirawan. Model Data. Agenda. Model Data Penyusunan Model Data Data Administration. Model Data. Model  pola, rencana, reprenstasi/miniatur, atau deskripsi yang didesain untuk menunjukkan struktur atau kerja dari obyek, sistem dan konsep.

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Model Data

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  1. Panji Wisnu Wirawan Model Data

  2. Agenda • Model Data • Penyusunan Model Data • Data Administration

  3. Model Data • Model  pola, rencana, reprenstasi/miniatur, atau deskripsi yang didesain untuk menunjukkan struktur atau kerja dari obyek, sistem dan konsep. • Model data  representasi entitas atau obyek yang menunjukkan struktur kerja sistem informasi.

  4. Model Data • Pemodelan data  fase-2 information engineering (IE). • Hasil  sebuah desain yang mencerminkan data yang diperlukan organisasi. • Macam model data : • Relational • Object Relational • Dimensional

  5. Model Data

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  8. Model Data • Keuntungan model data : • Memberikan gambaran menyeluruh mengenai data yang dibutuhkan dalam organisasi/perusahaan. • Memberikan kemudahan dalam berkomunikasi.

  9. Penyusunan Model Data • Top-down approach • Dibagi menjadi • Conceptual data model • Logical data model • Physical data model

  10. Conceptual Data Model • Conceptual data model  a high-level representation of business information and its sources and endpoints and the events that occur in all steps in between • includes an Entity Relationship Diagram (ERD) • created without consideration of database concepts

  11. Conceptual Data Model

  12. Logical Data Model • Logical data model The logical design of a database involves taking the business information discovered in a CDM and translating 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

  13. Physical Data Model • Physical Data Model It describes an absolute design of the database implementation. A data architect, or sometimes a database administrator, completes this stage. • Includes tables, columns, keys, data types, validation rules, database triggers, stored procedures, domains, and access constraints.

  14. Physical Data Model • Uses abbreviated column names limited by the database management system (DBMS) • Includes primary keys and indices for fast data access. • May be de-normalized to meet performance requirements

  15. Data Administration (DA) • Tujuan  meningkatkan pemahaman dan manajemen data. • Bertanggung jawab mengembangkan dan memelihara standar manajemen data dan prosedur, &membuat panduan dan metode untuk berbagi-pakai data. • Data Administrator berhak me-review dan menyetujui desain model data.

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