Diagram Badan Amil Zakat Infak dan Shodaqoh

Diagram dari Badan Amil Zakat Infaq dan Shodaqoh :

Berikut adalah Mapping dari diagram diatas :

Mapping  Diagram Badan Amil Zakat Infaq dan Shodaqoh

Diagram Relasi Entitas Perpustakaan

Diagram dari relasi entitas perpustakaan meliputi, buku, anggota, dan Pegawai :

Sedangkan di bawah ini adalah mapping dari ERD diatas.

Diagram Relasi Entitas Perkuliahan Dosen-Mahasiswa

Diagram Relasi Entitas hubungan perkuliahan antara dosen dan mahasiswa :

Gambar diatas adalah sebuah ERD dari Sistem Perkuliahan, Sedangakan Gambar dibawah ini :

Mapping ERD Siste Perkuliahan dosen dan mahasiswa :

Sistem Perkuliahan Dosen dan Mahasiswa

Database Modeling

Too often, databases that support mission-critical applications are poorly designed. Built in a rush, they can lack proper data integrity and invite problems that result in orphaned records, poor performance and even improperly deleted data. A logical data model, based on an evaluation of the existing systems and user requirements, can eliminate these problems. Data modeling uses the end-user and application-design requirements as a starting point, so teams can diagram the storage of data, and how different pieces of data relate to each other. A quick primer on data-modeling vocabulary includes: Entity: A collection of tuples (records) that generally maps to tables in the physical database.

Tips for Effective ER Diagrams

1) Make sure that each entity only appears once per diagram.

2) Name every entity, relationship, and attribute on your diagram.

3) Examine relationships between entities closely. Are they necessary? Are there any relationships missing? Eliminate any redundant relationships. Don’t connect relationships to each other.

4) Use colors to….