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Terminologi Model Hubungan
Pangkalan Data
Nama:Mohamad Aiman Fazly Bin Mihat
Kad Pengenalan:981111-01-6621
Kelas:1KPD1
Semester:1
Pensyarah:Pn Zuriani
Pn Ronawati
Tujuan
 Pelajar akan mengetahui tentang
terminologi model hubungan
pangkalan data serta maksudnya
dapat mengenalpasti komponen-
komponen tersebut.Pelajar juga dapat
menentukan dan membezakan antara
kunci asing dalam suatu hubungan.
Penerangan
1. Terminologi-terminologi dalam model
hubungan pangkalan data.
-Domain
-Hubungan
-Tuple
-Atribut
-Kardinaliti
-Darjah
2. Istilah alternatif yang digunakan untuk
model hubungan pangkalan data.
Istilah Formal Alternatif 1 Alternatif 2
Hubungan Jadual Fail
Tuple Baris Rekod
Atribut Lajur Medan
3. Maksud terminologi hubungan
pangkalan data.
Terminologi Penerangan
Domain Set nilai yang dibenarkan untuk
satu atau lebih atribut
Hubungan/jadual/fail Jadual yang mempunyai lajur
dan baris
Tuple/baris/rekod Baris bagi hubungan/jadual
Atribut/lajur/medan Lajur bagi hubungan/jadual yang
mempunyai nama
Kardinaliti Bilangan baris bagi jadual
Darjah Bilangan lajur bagi jadual
4. Mengenalpasti komponen model
hubungan pangkalan data
PELAJAR
NoPel NamaPel NoIC Bahagian CGPA KodKursus
1234 Aiman 981111-01-
6621
5 3.00 CS10
2345 Fatin 980912-01-
6096
3 2.65 CS09
3456 Syahmira
h
980920-01-
6094
4 3.50 CS10
Atribut
Tuple
Hubunga
n
Nama Atribut Nama Domain Makna Penerangan
NoPel Nombor Pelajar Set nombor-nombor
pelajar
Aksara (8)
NamaPel Nama Pelajar Set nama-nama
pelajar
Aksara (30)
NoIC No IC Set nombor-nombor
IC pelajar
Aksara (24)
Format 999999-99-
9999
Bahagian Bahagian Pelajar Set bahagian-
bahagian pelajar
Aksara (2)
Julat 01-10
CGPA CGPA Set purata mata
gred terkumpul
pelajar
Nombor (4,2)
Julat 0.00-4.00
KodKursus Kod Kursus Set kod-kod pelajar Aksara (4)
Format XX99
5. Ciri-ciri hubungan
- Hubungan mempunyai nama yang unik
seperti hubungan PELAJAR atau
hubungan KURSUS
- Setiap sel iaitu pertindanan di antara baris
dan lajur mengandungi satu nilai sahaja
- Setiap atribut mempunyai nama yang unik
- Nilai atribut mestilah datang dari domain
yang sama
- Setiap tuple adalah unik.Oleh
itu,hubungan mesti mempunyai kunci
utama untuk menjamin keunikan setiap
tuple
TAMAT
SEKIAN
TERIMA
KASIH

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Kajian Kes

  • 1. Terminologi Model Hubungan Pangkalan Data Nama:Mohamad Aiman Fazly Bin Mihat Kad Pengenalan:981111-01-6621 Kelas:1KPD1 Semester:1 Pensyarah:Pn Zuriani Pn Ronawati
  • 2. Tujuan  Pelajar akan mengetahui tentang terminologi model hubungan pangkalan data serta maksudnya dapat mengenalpasti komponen- komponen tersebut.Pelajar juga dapat menentukan dan membezakan antara kunci asing dalam suatu hubungan.
  • 3. Penerangan 1. Terminologi-terminologi dalam model hubungan pangkalan data. -Domain -Hubungan -Tuple -Atribut -Kardinaliti -Darjah
  • 4. 2. Istilah alternatif yang digunakan untuk model hubungan pangkalan data. Istilah Formal Alternatif 1 Alternatif 2 Hubungan Jadual Fail Tuple Baris Rekod Atribut Lajur Medan
  • 5. 3. Maksud terminologi hubungan pangkalan data. Terminologi Penerangan Domain Set nilai yang dibenarkan untuk satu atau lebih atribut Hubungan/jadual/fail Jadual yang mempunyai lajur dan baris Tuple/baris/rekod Baris bagi hubungan/jadual Atribut/lajur/medan Lajur bagi hubungan/jadual yang mempunyai nama Kardinaliti Bilangan baris bagi jadual Darjah Bilangan lajur bagi jadual
  • 6. 4. Mengenalpasti komponen model hubungan pangkalan data PELAJAR NoPel NamaPel NoIC Bahagian CGPA KodKursus 1234 Aiman 981111-01- 6621 5 3.00 CS10 2345 Fatin 980912-01- 6096 3 2.65 CS09 3456 Syahmira h 980920-01- 6094 4 3.50 CS10 Atribut Tuple Hubunga n
  • 7. Nama Atribut Nama Domain Makna Penerangan NoPel Nombor Pelajar Set nombor-nombor pelajar Aksara (8) NamaPel Nama Pelajar Set nama-nama pelajar Aksara (30) NoIC No IC Set nombor-nombor IC pelajar Aksara (24) Format 999999-99- 9999 Bahagian Bahagian Pelajar Set bahagian- bahagian pelajar Aksara (2) Julat 01-10 CGPA CGPA Set purata mata gred terkumpul pelajar Nombor (4,2) Julat 0.00-4.00 KodKursus Kod Kursus Set kod-kod pelajar Aksara (4) Format XX99
  • 8. 5. Ciri-ciri hubungan - Hubungan mempunyai nama yang unik seperti hubungan PELAJAR atau hubungan KURSUS - Setiap sel iaitu pertindanan di antara baris dan lajur mengandungi satu nilai sahaja - Setiap atribut mempunyai nama yang unik - Nilai atribut mestilah datang dari domain yang sama - Setiap tuple adalah unik.Oleh itu,hubungan mesti mempunyai kunci utama untuk menjamin keunikan setiap tuple