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1 MỤC LỤC GIỚI THỆU CHUNG .................................................................................................... 4 CHƯƠNG 1. XÂY DỰNG CƠ SỞ DỮ LIỆU ..................................................... 6
1.1 BÀI TOÁN ......................................................................................... 6 1.2. CƠ SỞ DỮ LIỆU QUAN HỆ ............................................................ 7 1.3. BẢNG DỮ LIỆU CHI TIẾT .............................................................. 7
2.1. BÀI TOÁN ......................................................................................... 9 2.2. CƠ SỞ DỮ LIỆU QUAN HỆ ............................................................ 9 2.3. BẢNG DỮ LIỆU CHI TIẾT ............................................................ 10 CHƯƠNG 2. CÂU LỆNH TRUY VẤN SQL .................................................... 11
2.1. Cấu trúc lồng nhau ............................................................................ 12 2.2. Cấu trúc lượng từ .............................................................................. 13 2.3. Cấu trúc tập hợp ............................................................................... 13
3.1. Lệnh INSERT ................................................................................... 14 3.2. Lệnh UPDATE ................................................................................. 15 3.3. Lệnh DELETE .................................................................................. 15
DẠNG 1: CÂU LỆNH TRUY VẤN CÓ ĐIỀU KIỆN ................................. 16 Bài số 1: Câu lệnh SQL không kết nối ....................................................... 16 Bài số 2: Câu lệnh SQL có kết nối ............................................................. 17 BÀI TẬP TỰ GIẢI ........................................................................................ 18 DẠNG 2: CÂU LỆNH TRUY VẤN CÓ PHÂN NHÓM ............................ 19 Bài số 1: Câu lệnh SQL có từ khoá GROUP BY không điều kiện. .......... 19 Bài số 2: Câu lệnh SQL có từ khoá GROUP BY với điều kiện lọc. .......... 20 Bài số 3: Câu lệnh SQL có từ khoá GROUP BY với điều kiện nhóm. ..... 21 Why is this page out of focus?This is a Premium document. Become Premium to read the whole document. Why is this page out of focus?This is a Premium document. Become Premium to read the whole document. Why is this page out of focus?This is a Premium document. Become Premium to read the whole document. 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