Diskda saqlanadigan fayllar katologi

b) Berilgan shartlar barchasi bolgan paytda
c) Qidiriladigan natijani inkor qilingan paytda
d) Qidirilayotgan natijani topgan paytda
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Malumotlar bazasini boshqarish tizimining asosiy tarkibiy qismi nima
Malumotlar bazasi
a) Texnik taminot
b) Dasturiy taminot
c) Malumot
d) Foydalanuvchi
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Malumotlar bazsida jadvaldagi satrlar nomini ko’rsating
a) Fayl
b) Malumot
c) Yozuv
d) Maydon
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SUM agregat funksiyasing vazifasi?
a) Ko’rsatilgan ustundagi qiymatlar yigindisini hisoblash
b) Ustunning o’rtacha qiymatini hisoblash
c) Ustundagi minimal qiymatni hisoblash
d) Ko’rsatilgan ustundagi qiymatlar sonini hisoblash
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To’g’ri yozilgan SQL so’rovni ko’rsating
a) CREATE TABLE Talaba (id int(3) primary key,name varchar(20),id_f int(4),FOREIGN KEY
REFERENCES fanlar(id_f));
b) CREATE TABLE Talaba (id int(3) primary key,name varchar(20),id_f int(4),FOREIGN KEY
(id) REFERENCES (id_f));
c) CREATE TABLE Talaba (id int(3) primary key,name varchar(20),id_f int(4),FOREIGN KEY
(id_f) REFERENCES fanlar(id_f));
d) CREATE TABLE Talaba (id int(3) primary key,name varchar(20),id_f int(4),FOREIGN KEY
(id_f) REFERENCES fanlar);
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COMMIT operatorining vazifasi.
a) Tranzaktsiya muaffaqiyatli tugashi
b) Jadvalning boshiga qaytish
c) Tranzaktsiya muaffaqiyatsiz tugashi