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03-data-model-erd.qmd
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03-data-model-erd.qmd
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---
title: "Entity-Relationship Model"
subtitle: "<br/>You can have data without information, but you cannot have information without data.<br/>- Daniel Keys Moran<br/><br/>"
block-headings: TRUE
author: "<br/><br/><br/>Alfa Nugraha Pradana"
institute: "Prodi Statistika dan Sains Data IPB University"
footer: "[rpubs.com/alfanugraha/sta1562-p03](https://rpubs.com/alfanugraha/sta1562-p03) "
format:
revealjs:
theme: [default, style.scss]
slide-number: c/t
code-copy: true
# center-title-slide: false
code-overflow: wrap
highlight-style: a11y
height: 1080
width: 1920
logo: assets/img/LogoIPBUni.png
preview-links: auto
editor: visual
---
## Outline
<br/>
- Perancangan Database
- Terminologi Database
- DB Browser for SQLite
- PostgreSQL
- Shiny
- GitHub fork
# Perancangan Database {background="#43464B"}
## Fase Perancangan Database
<br/>
. . .
::: columns
::: {.column width="60%"}
::: {.incremental}
1. **Pengumpulan dan analisis kebutuhan**, [memahami dan mendokumentasikan kebutuhan data bersamaan dengan analisis kebutuhan fungsional]{.fragment}
2. **Desain konseptual**, [deskripsi singkat dari kebutuhan data pengguna]{.fragment}
3. **Desain logis (Pemetaan Data dengan Model)**, [implementasi database menggunakan DBMS seperti model relasi (SQL)]{.fragment}
4. **Desain fisik**, [membangun struktur penyimpanan internal bersama dengan aplikasi database]{.fragment}
:::
:::
::: {.column width="40%"}
![](assets/img/db-phase.png){.absolute right="40"}
:::
:::
# Terminologi Database {background="#43464B"}
## Istilah
<br/>
::: {.incremental}
* **Enterprise**: organisasi atau lembaga yang mengelola database. [ex. Universitas, Rumah Sakit]{.fragment}
* **Entitas**: objek yang akan disimpan dan dapat dibedakan dengan objek lain. [ex. Mahasiswa, Mata Kuliah, Dosen, Fakultas]{.fragment}
* **Atribut**: unsur pada entitas yang berisi data. [ex. NIM, Nama]{.fragment}
* **Nilai data**: nilai yang disimpan pada setiap entitas. [ex. Alfa, G1501211013]{.fragment}
* **Record**: kumpulan unsur data yang saling berkaitan menginformasikan tentang suatu entitas secara lengkap.
* **Key**: penanda unik untuk mengidentifikasi suatu entitas.
:::
## Membangun Suatu Entitas
::: columns
::: {.column width="40%"}
```{{dot}}
graph Employee {
layout=neato
overlap=false
node [shape=box]; EMPLOYEE;
node [shape=circle, fixedsize=true, width=0.9] ssn; sex; salary; name; birth_date; address; supervisor; fname; lname;
ssn -- EMPLOYEE;
sex -- EMPLOYEE;
salary -- EMPLOYEE;
name -- EMPLOYEE;
birth_date -- EMPLOYEE;
address -- EMPLOYEE;
supervisor -- EMPLOYEE;
fname -- name;
lname -- name;
}
```
:::
::: {.column width="60%"}
```{dot}
graph Employee {
layout=neato
overlap=false
node [shape=box]; EMPLOYEE;
node [shape=circle, fixedsize=true, width=0.9] ssn; sex; salary; name; birth_date; address; supervisor; fname; lname;
ssn -- EMPLOYEE;
sex -- EMPLOYEE;
salary -- EMPLOYEE;
name -- EMPLOYEE;
birth_date -- EMPLOYEE;
address -- EMPLOYEE;
supervisor -- EMPLOYEE;
fname -- name;
lname -- name;
}
```
:::
:::
::: footer
Learn more: [Graphviz](https://graphviz.org/documentation)
:::
## Entity-Relationship Diagram 1
```{{mermaid}}
%%| echo: true
%%| fig-width: 4.5
erDiagram
CUSTOMER ||--o{ ORDER : places
ORDER ||--|{ LINE-ITEM : contains
CUSTOMER }|..|{ DELIVERY-ADDRESS : uses
```
```{mermaid}
%%| fig-width: 4.5
erDiagram
CUSTOMER ||--o{ ORDER : places
ORDER ||--|{ LINE-ITEM : contains
CUSTOMER }|..|{ DELIVERY-ADDRESS : uses
```
::: footer
Learn more: [Mermaid](https://mermaid.js.org/syntax/entityRelationshipDiagram.html)
:::
## Entity-Relationship Diagram 2
<br/>
::: columns
::: {.column width="50%"}
```{{mermaid}}
%%| echo: true
%%| fig-width: 3
erDiagram
CUSTOMER ||--o{ ORDER : places
CUSTOMER {
string name
string custNumber
string sector
}
ORDER ||--|{ LINE-ITEM : contains
ORDER {
int orderNumber
string deliveryAddress
}
LINE-ITEM {
string productCode
int quantity
float pricePerUnit
}
```
:::
::: {.column width="50%"}
```{mermaid}
%%| fig-width: 3
erDiagram
CUSTOMER ||--o{ ORDER : places
CUSTOMER {
string name
string custNumber
string sector
}
ORDER ||--|{ LINE-ITEM : contains
ORDER {
int orderNumber
string deliveryAddress
}
LINE-ITEM {
string productCode
int quantity
float pricePerUnit
}
```
:::
:::
::: footer
Learn more: [Mermaid](https://mermaid.js.org/syntax/entityRelationshipDiagram.html)
:::
# DB Browser for SQLite {background="#43464B"}
## Antarmuka
![](assets/img/db_browser_sqlite.png)
::: footer
Learn more: [SQLite Browser](https://sqlitebrowser.org/)
:::
# PostgreSQL {background="#43464B"}
## Antarmuka pgAdmin
![](assets/img/pgadmin.png)
::: footer
Learn more: [PostgreSQL](https://www.postgresql.org/)
:::
## ERD in PostgreSQL
Download contoh file SQL untuk PostgreSQL: [Chinook Database](https://github.com/sta1562/materials/raw/main/assets/sql/chinook_pg.sql)
![](assets/img/pg_erd.png)
::: footer
Learn more: [pgAdmin](https://www.postgresql.org/ftp/pgadmin/pgadmin4/)
:::
# Shiny RStudio {background="#43464B"}
## ShinyApps
![](assets/img/shiny.png)
::: footer
Learn more: [Shiny Gallery](https://shiny.rstudio.com/gallery/)
:::
# GitHub fork {background="#43464B"}
## Fork
> Salinan repositori yang ingin dikelola secara mandiri tanpa harus mengubah kode sumber dari pemilik asal repositori
<br/>
* Pada GitHub, pilih repositori yang akan dituju
* Pada pojok kanan atas, klik menu **Fork**
* Buat repositori baru yang diinginkan, secara default nama repositori tersebut akan sama dengan asalnya
* Klik **Create fork**
::: footer
Learn more: [Fork a repo](https://docs.github.com/en/get-started/quickstart/fork-a-repo)
:::
# Questions? {background="#43464B"}