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Create a SQL Script:

1. Create 3 tables with primary keys and at least four columns each. Use any topic not used before.
2. Insert at least 5 rows in each table.
3. Join 2 tables and select data from each table.
4. Join 3 tables and select data from each table.
5. Update 1 of the rows with new data.
6. Commit the update.
7. Alter 1 table to add a new field.
8. Update the table and add data to the new field.
9. Rollback up to the commit.
10. Drop all tables.

Upload the full script as a text file to Classwork 62C.

Answer :

To create a SQL script that fulfills the given requirements, follow these steps: Create three tables with primary keys and fields, ensuring that each table has at least four columns., Insert at least five rows of data into each table. For instance, Join two tables together and select data from each table. ,

1. Create three tables with primary keys and fields, ensuring that each table has at least four columns. You can choose any topic that has not been used before. For example:
- Table 1: "Students"
- Table 2: "Courses"
- Table 3: "Enrollments"

2. Insert at least five rows of data into each table. For instance:
- Table "Students" may have columns like "student_id," "student_name," "student_age," and "student_major."
- Table "Courses" may have columns like "course_id," "course_name," "course_description," and "course_credits."
- Table "Enrollments" may have columns like "enrollment_id," "student_id," "course_id," and "enrollment_date."

3. Join two tables together and select data from each table. For example, you can join the "Students" and "Enrollments" tables to retrieve data about students and their enrolled courses.

4. Join three tables together and select data from each table. You can join all three tables ("Students," "Courses," and "Enrollments") to gather information about students, their enrolled courses, and the details of those courses.

5. Update one of the rows with new data. For instance, you can update a student's age in the "Students" table.

6. Commit the update to make it permanent in the database.

7. Alter one table by adding a new field. You can add a new column like "student_email" to the "Students" table.

8. Update the table to add data to the new field. For example, you can update the "student_email" field with students' email addresses.

9. Rollback the changes made since the commit to undo the update.

10. Drop all tables to remove them from the database.

Please note that the table and column names mentioned in this explanation are just examples, and you can choose different names as per your requirements.

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