tb_buku tb_peminjaman
|----------| |*id_peminjaman |
|*nm_buku |------>| nm_buku |
| jml | | tgl |
| | | jumlah |
|----------| |---------------|
Contoh data:
tabel tb_buku
----------------------
| nm_buku | jml |
----------------------
| buku1 | 5 |
| buku2 | 10 |
| buku3 | 2 |
-----------------------
tabel tb_peminjaman
---------------------------------------------------
| id_peminjaman | nm_buku | tgl | jumlah |
---------------------------------------------------
| PJ01 | buku1 |5/3/2011| 2 |
| PJ02 | buku1 |7/3/2011| 1 |
| PJ03 | buku3 |7/3/2011| 2 |
---------------------------------------------------
*Data baru ditambahkan k tb_peminjaman ketika button Simpan di klik
Agar suatu ketika saya ingin menghapus data di tabel tb_buku (buku1), namun data relasinya yang di tabel tb_peminjaman tetap ada untuk dijadikan histori, solusinya bagaimana ya? Sy hanya pakai Enforce Referential Integrity, tanpa cascade.
Terima Kasih atas pencerahan master2 access.
------------------------------------
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