Laboratoriya ishi Ko‘rinishlar (view) Topshiriqlar

Laboratoriya ishi

Ko‘rinishlar (VIEW)
Topshiriqlar:

1. Oracle Application Express ilovasini ishga tushiring hamda ma’lumotlar bazasiga bog‘lanishni o‘rnating.

2. “Read Only” turidagi ikki xil ko‘rinish (view) yarating.

3. Yuqorida yaratilgan ko‘rinishlardan birini “yangilanuvchi” ko‘rinishga keltiring.

4. Yangilanuvchi ko‘rinish yarating;

5. Yangilanuvchi ko‘rinishni bog‘lanish (JOIN )bilan yarating;

6. SQLda ko‘rinish yaratish buyruqlarini konspekt qiling;

7. 2–5 topshiriqlarda ko‘rsatilgan ma’lumotlarni “Ko‘rinishlar” nomli hisobot tayyorlang.

8. Nazorat savollariga javob berib, laboratoriya ishini himoya qiling.

2.1.CREATE OR REPLACE FORCE VIEW V_STUDENTLAR AS SELECT * FROM TALABA WITH READ ONLY

2.2. CREATE OR REPLACE FORCE VIEW V_GURUH AS SELECT * FROM GURUH WITH READ ONLY

2.3. CREATE OR REPLACE FORCE VIEW V_YUNALISH (ID_Y, YUNALISH_NOMI, ID_FF) AS SELECT * FROM YUNALISH WHERE ID_Y=1 WITH READ ONLY

3. CREATE OR REPLACE FORCE VIEW W_STUDENT (id_t, familiyasi, ismi, tugilgan_joy, tugilgan_sana) AS SELECT id_t, familiyasi, ismi, tugilgan_joy, tugilgan_sana FROM TALABA WITH CHECK OPTION

INSERT INTO W_STUDENT VALUES (10, 'Yuldashev', 'Ibrohim', 'Jizzax vil', '15.09.1999')

UPDATE W_STUDENT SET familiyasi='Jurayev', ismi='Xurshid', tugilgan_joy='Samarqand vil', tugilgan_sana='04.08.1996' WHERE id_t=10

DELETE FROM W_STUDENT WHERE ID_T=10

4. CREATE OR REPLACE FORCE VIEW W_FAKULTET (id_f, fakultet_nomi, dekan) AS SELECT * FROM fakultet

5. CREATE OR REPLACE FORCE VIEW v_yunlishguruh AS SELECT id_y, yunalish_nomi AS nomi1, id_g, guruh_nomi, kurator, kurs FROM guruh INNER JOIN yunalish ON id_y=id_yy