camtasia student

Student (s #, sname, sage, ssex) Student table Course (C #, cname, T #) Curriculum SC (s #, C #, score) Orders table Teacher (T #, tname) Instructor table Problem: 1. query the student IDs of all students whose "course scores are higher than" course scores; Select a. s # From (select s #, score from SC where C # = '001'), (Select s #, score from SC where

50 common SQL statements Student (S #, Sname, Sage, Ssex) Student tableCourse (C #, Cname, T #) CurriculumSC (S #, C #, score) Orders tableTeacher (T #, Tname) Instructor table Problem:1. query the student ID of all students whose score is higher than that of the "002" course;Select a. S # from (select s #, score from SC where C # = '001') a, (select s #, scoreF

50 common SQL statementsStudent (S #, Sname, Sage, Ssex) Student tableCourse (C #, Cname, T #) CurriculumSC (S #, C #, score) Orders tableTeacher (T #, Tname) Instructor tableProblem:1. query the student ID of all students whose score is higher than that of the "002" course;Select a. S # from (select s #, score from SC where C # = '001') a, (select s #, scoreFrom SC where C # = '002') BWhere a. score> B. sc

50 Common SQL statements Student (s#,sname,sage,ssex) Student table Course (c#,cname,t#) timetable SC (s#,c#,score) score sheet Teacher (t#,tname) Teacher's Table Problem: 1, Query the "001" Course than "002" course scores of all students of the school number; Select a.s# from (select S#,score from SC where c#= ' 001 ') A, (select S#,score From SC where c#= ' 002 ') b where A.score>b.score and a.s#=b.s#;

Previously used ArrayList to manage student management system easily. The principle of implementation is basically similar. From keyboard input to the program, read it to assign two variables (name and number), write object (object stream) to file .... The specific implementation is as follows: Package CN. Systemstudent; Import Java.io.File; Import Java.io.FileInputStream; Import java.io.FileNotFoundException; Import Java.io.FileOutputStream; Import

Package Homework08;/* Debug a morning, Harvest: learned the use of yesterday's debugLessons learned: Student stus[]=new student[2];for (int i=0;iStus[i]=new Student (); it should be written out of the loop, otherwise it will be initialized every time.}*/Import Java.util.Scanner;public class Main {public static void Main (String[]args) {/*** 1: Create a simple

Use students--1, queries the sname, Ssex, and class columns of all records in the student table.Select Sname,ssex,class from Student--2, query teachers all units that are not duplicated depart column.Select distinct depart from teacher--3, queries all records of the student table.SELECT * FROM Student--4, queries all r

Python implements the student information management system, python After the Python Implementation of the simple address book in the previous blog, I want to write a complex student information management system. 1. Entry Management of student information;2. Course Selection operations for students;3. query the Course selections of students; The sqlite3 module i

Label:Create DATABASE Shujuku Use Shujuku Use Cangku Go --Note: Foreign key to this relationship is not necessarily a key --2: When you create a foreign key, the primary key for the linked table is established --3: When a foreign key is created, the value of the foreign key must be derived from the primary key value --4: When you want to delete a primary key table, you must first delete the foreign key table information CREATE TABLE student--

Encapsulate the database to query student information (add, delete, query, and modify) Next to the content of the previous Article (call the method for opening and closing the database) // Query all students+ (NSMutableArray *) getAllStudents;// Query a single student+ (Student *) getStudentWithID :( NSInteger) aID;// Add a s