Write SQL statements to do the following on the database schema shown below in the picture. a) Insert a new record in the course table with the following data values course number = 'COSC4390' course name = 'Knowledge Engineering' course credit hours= ‘3’ department = ’COSC'>. b) Change the class of student 'Ahmed' to 4. c) Delete the record of the student whose name is 'Ahmed' and his number is 22.

Please help with the following: Using oracle sql live or sql developer what sql statements could be use to find the following: A simple database composed of the following tables: PATIENT, DOCTOR, DRUG, and PRESCRIPTION, is now loaded with this assignment and you are ready to start. Please explore the database and then write the appropriate SQL command. 1. List all the rows in which the prescription dates occur on or after November 14. 2. How many doctors provide prescriptions with 30 tablets in total? Beginfor c in (select table_name from user_tables) loopexecute immediate ('drop table '||c.table_name||' cascade constraints');end loop;End;//* */ ALTER SESSION SET NLS_DATE_FORMAT = 'MM/DD/YYYY';CREATE TABLE DOCTOR (DOC_ID varchar2(5) PRIMARY KEY,DOC_LNAME varchar2(15),DOC_FNAME varchar2(15),DOC_INITIAL varchar2(1),DOC_SPECIALTY varchar2(15));INSERT INTO DOCTOR VALUES('29827','Sanchez','Julio','J','Dermatology');INSERT INTO DOCTOR...

1) Assume the EMPLOYEE table has the following rowsID DEPT SALARY NAME100 SALES 40000 Smith101 RD 38000 Terry102 HR 60000 David103 SALES 58000 Ellie104 RD 70000 Judya) Provide the complete PL/SQL code to implement a Virtual Private Database suchthat an employee could only view the records for employees in the samedepartment while masking coworkers’ salary with NULL.b) Based on the Virtual Private Database you implemented in step a), would anemployee be able to insert, update or delete a record for another employee whoworks in another department? If yes, what might be the potential security risk andhow would you fix the problem by setting up the VPD appropriately?

By using this table answer this question in SQL: Show the department id, department name and the number of employees working in any department which has less than 4 employees

Database systems In SQL MurachCollege database. Provide a list of all of the students, the number of courses they are taking, and the number of different instructors they have across all of their courses. The first column should provide the last name of each student (column titled Student Last Name). The second column should provide the number of courses that each student is taking (column titled Number of Courses). The third column should provide the number of different instructors that each student has for all of the courses they are taking (column titled Number of Different Instructors). No other columns should be provided in the result. Organize the result by student last name in alphabetical order.

Write the SQL statements to perform the following operations: a. Create a new course "CS-001", titled "Weekly Seminar", with 0 credits. b. Create a section of this course in Fall 2017, with sec id of 1, and with theclocation of this section not yet specified. c. Enroll every student in the Comp. Sci. department in the above section. d. Delete enrollments in the above section where the student’s ID is 12345. e. Delete the course CS-001. What will happen if you run this delete statement without first deleting offerings (sections) of this course? f. Delete all takes tuples (i.e., rows) corresponding to any section of any course with the word "advanced" as a part of the title; ignore case when matching the word with the title.

write SQL statement to search for employees whose manager is specified by the txtEname box

database: sql Q1. Create the following tables: Carrier Attribute name Type Size Constraint carrierID Varchar2 10 Primary key carrierName Varchar2 100 NOT NULL Phone Varchar2 50 LIKE ‘+966%’ Range Varchar2 30 Value is either ‘International’ or ‘Local’ Review Attribute name Type Size Constraint ReviewID INT Primary key Stars INT NOT NULL Comment Varchar2 70 Name Varchar2 50 Default ’User’ CustomerID INT Foreign key references customers ProductID INT

Write queries in SQL to answer each of the following questions: 1. Find all students in Comp. Sci. dept 2. Find all students with total credits > 100 3. Find all students who took course in Spring 2010 (Remove duplicates please) 4. Find all courses taken by the student whose ID is 76543 and also find his name create table student (ID varchar(5), name varchar(20) not null, dept_name varchar(20), tot_cred numeric(3,0), primary key (ID) ); create table takes (ID varchar(5), course_id varchar(8), sec_id varchar(8), semester varchar(6), year numeric(4,0), grade varchar(2), primary key (ID, course_id, sec_id, semester, year) ); insert into student values ('00128', 'Zhang', 'Comp. Sci.', '102'); insert into student values ('12345', 'Shankar', 'Comp. Sci.', '32'); insert into student values ('19991', 'Brandt', 'History', '80'); insert into student values ('23121', 'Chavez', 'Finance', '110'); insert into student values ('44553', 'Peltier', 'Physics', '56'); insert into student values...

Use your ERD to define the table structures in the database using SQL DDL commands to build your schema.

In SQL, write the appropriate statements to insert default values ​​for these two tables, each table containing 5 inserts

Express the following SQL code in Relational Algebra form.SELECT *FROM COURSEWHERE (COURSE.COLLEGE <> ’Business’OR COURSE.COLLEGE <> ’Engineering’)AND COURSE.CREDIT = ’U’;

Using the Henry Books database,Henry Books no longer carries books written by Barbara Owen. Delete this author from the authors table. You will insert 2 snips for this question. What construct did you use to delete author Barbara Owens? Insert the snip of the construct used: Insert the snip of the authors table. Be sure all rows are displayed: