Desain Basis Data

Retno Aulia Vinarti

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Study Guide

Describe the major components of an information system

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Answer

• A computer-based information system includes a database, database software, application software, computer hardware, and personnel using and developing the system.

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Study Guide

Discuss the relationship between the information systems lifecycle and the database system development lifecycle

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Answer

• The database is a fundamental component of an information system, and its development and usage should be viewed from the perspective of the wider requirements of the organization.

• Therefore, the lifecycle of an organization’s information system is inherently linked to the lifecycle of the database system that supports it.

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Study Guide

Describe the main purpose(s) and activities associated with each stage of the database system development lifecycle*

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Answer

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Mini World

• DreamHome (Similar to Rumah.com)• Situs sebagai lapak penjualan rumah di setiap

cabang (kota) terintegrasi.

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Property Owners

Mini World

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Database Planning

• Define Mission Statement by asking these question:– ‘What is the purpose of your company?’– ‘Why do you feel that you need a database?’– ‘How do you know that a database will solve your

problem?’

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Database Planning

• Example Answer:• We offer a wide range of high quality properties for

rent to clients registered at our branches throughout the UK. Our ability to offer quality properties, of course, depends upon the services we provide to property owners.

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Database Planning

• Example Answer:• To be honest we can’t cope with our own success. Over the

past few years we’ve opened several branches in most of the main cities of the UK, and at each branch we now offer a larger properties to a growing number of clients.

• However, this success has been accompanied with increasing data management problems, which means that the level of service we provide is falling. Also, there’s a lack of cooperation and sharing of information between branches, which is a very worrying development.

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Database Planning

• Example Answer:• All I know is that we are drowning in

paperwork. We need something that will speed up the way we work by automating a lot of the day-to-day tasks that seem to take for ever these days. Also, I want the branches to start working together. Databases will help to achieve this, won’t they?

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Database Planning

• Identifying Mission Objective• The process of creating mission objectives

involves conducting interviews with appropriate members of staff.

• The interviews must cover job description, typical day task performance, kind of data they deal, types of reports, things monitored, type of service to customer.

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Playing Drama

• Pemeran silahkan maju ke depan..– Director– Manager – Supervisor– Assistant– Interviewer– Moderator

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Study Guide

Discuss what a user view represents in the context of a database system

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Answer

• A user view defines what is required of a database system in terms of the data to be held and the transactions to be performed on the data (in other words, what the users will do with the data).

• The requirements of a user view may be distinct to that view or overlap with other views

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User Views

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Kajur

Sekjur

Dekan

Koord. TA

Dosen

Bag. Akademik

List mhs terancam DO

Akademik Jurusan

Keuangan Jurusan

Rencana Strategis ITS

SKS Lulus, SKS Tempuh

Bidang Minat

Study Guide

Discuss the main approaches for managing the design of a database system that has multiple user views

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Answer

• the centralized approach;• the view integration approach;• a combination of both approaches.

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Centralized Approach

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User View Approach

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Study Guide

Compare and contrast the three phases of database design

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Answer

• Conceptual database design: The process of constructing a model of the data used in an enterprise, independent of all physical considerations.

• Logical database design: The process of constructing a model of the data used in an enterprise based on a specific data model, but independent of a particular DBMS and other physical considerations.

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Answer

• Physical database design: The process of producing a description of the implementation of the database on secondary storage; it describes the base relations, file organizations, and indexes used to achieve efficient access to the data, and any associated integrity constraints and security measures

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Tugas Minggu Depan

• Membawa kertas milimeter satu orang satu lembar

• Pensil dan penghapus• Report/Nota

• Sifat: Individu

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