Jul 13, 2014 · You need a teacher-subject table instead of putting subject in the teacher record; a teacher could teach more than one subject. Also remove teacher_id from batch use a teacher …

Dec 14, 2024 · To display teacher’s name, salary, age for male teachers only, the WHERE clause followed by the condition ie., GENDER=’M’ should be used in the query. QUERY: SELECT …

Nov 16, 2024 · Learn how to build a Library Management System using SQL with MySQL or PostgreSQL. This step-by-step guide covers database creation, table structures for books, …

Mar 6, 2025 · We presented a step-by-step approach to create a necessary table, insert data, and query to fetch all teachers linked to a student and identify the top teacher. This method is …

Dec 2, 2018 · In preparation for my upcoming test in SQL and relational databases for Launch School, I have designed a simple school relational database. I will be outlining the various …

May 18, 2019 · It needs a column in one table to link to the other. Example: Worker:Manager. In designing an "Entity-Relationship" ("ER") schema do something like this: One table per …

To connect the courses table to teachers in a one-to-many relationship, the following conditions must be met: Each table must include a primary key column. A primary key is a unique, …

-- DROP TABLE teachers; -- Listing 1-3 Inserting data into the teachers table INSERT INTO teachers (first_name, last_name, school, hire_date, salary) VALUES ('Janet', 'Smith', 'F.D. …

SELECT sid,sname FROM student WHERE sid in ( SELECT sc.sid FROM teacher t,course c,sc WHERE t.tid = c.tid AND c.cid = sc.cid AND t.tname ='Ye Ping' GROUP BY sc.sid HAVING …

-- create a table CREATE TABLE teacher ( id INTEGER PRIMARY KEY, subject TEXT NOT NULL ); -- insert some values INSERT INTO teacher VALUES (111, 'Math'); INSERT INTO …