Which of the following is false? a. You can use a query to retrieve specific information from a database. b. You can write queries using SQL. c. You cannot use a query when a database has more than one table. d. None of the above.
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Which of the following is false?
a. You can use a query to retrieve specific information from a
b. You can write queries using SQL.
c. You cannot use a query when a database has more than one table.
d. None of the above.
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- What is a NULL value?Which of the following SQL statements is invalid and returns an error message? ALTER TABLE books ADD CONSTRAINT books_pubid_uk UNIQUE (pubid); ALTER TABLE books ADD CONSTRAINT books_pubid_pk PRIMARY KEY (pubid); ALTER TABLE books ADD CONSTRAINT books_pubid_nn NOT NULL (pubid); ALTER TABLE books ADD CONSTRAINT books_pubid_fk FOREIGN KEY (pubid) REFERENCES publisher (pubid); All of the above statements are invalid.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. List doctor’s details where speciality is either Dermatology or Neurology. (Use INoperator). List the results by the first name in ascending order and the last name indescending order sql doc below 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…
- Database course: Write SQL queries to do the following A. List names of IT students. B. List titles of courses of type E. C. Display the results of student with ID 201006 D. List student names and the courses they took. E. List total credits that student with ID 201002.Below is part of a Student database. The primary keys are highlighted in bold. Student (studNo, studName, address, mobileNo) Registration (studNo, courseNo, regDate, semester, session) Course (courseNo, courseName, creditHour, level) Project (projNo, projName, courseNo) Assignment (projectNo, studNo, startDate, dueDate, hoursSpent) QUESTION 1. Write a PL/SQL FUNCTION that calculates the cost each student has to pay for all courses taken. In the photo is example the cost detail for each course. 2. Write a PL/SQL Procedure to call the function you created in question 1 . Allow the user to enter the student ID (studno). SECOND PHOTO IS THE EXAMPLE OF EXPECTED OUTPUTWrite in SQL a command that creates the table Supplier according to the above description . Write in SQL a statement that adds a new column named comapnyID of type char(5). This column should be defined as a foreign key that relates the table Supplier to the table Company . Write in SQL a query that lists the full names (first and last names) of all suppliers arranged in ascending order according to their date of births . Write a SQL query that displays the number of suppliers who born in December . Write in SQL a query that displays the ids of the suppliers who supply the highest number of products . Create a view named ‘SupplierDetails’ to hold all the details of suppliers whose last names start with ‘bait’ and who supply between 50 and 200 products .
- Student (sid, name, zip) Takes (sid, cid, year) Course(cid, title, dept) We run the following SQL command: CREATE INDEX newl on Student(zip,name); For each of the following SQL queries indicate whether the index newl will speed it up, or will not affect its performance, or will slow it down. Answer "faster" if the index speeds up the query, "slower" if the index slows down the query, and "the same" if the index does not affect the runtime of the query. Assume that the optimizer is super-smart, and will always chose the absolute best possible plan.Instructions Write SQL queries to solve the following problems. We will be using the “university” database. All queries should involve only the instructor table. After you are done, save your work as .sql file and turn in the .sql file into Moodle for grading. Write a SQL statement to display all columns using the SQL asterisk (*) wild-card character. Write a SQL statement to display ID and name of the instructors (ID appears first). Write a SQL statement to display department names. Write a SQL statement to display unique department names. (expect 7 rows returned) Write a SQL statement to display all info about instructors having a salary greater than 75000. (expect 6 rows returned) Write a SQL statement to display department name, instructor name, and salary for instructors that have a salary less than 70000. Sort the results in ascending order by department name. (expect 4 rows returned) Write a SQL statement to display name, department name, and salary for instructors that have a…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 drugs whose prices are between $50 and $100. 2.List number of female patients born in 1970 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 VALUES('32445','Jorgensen','Annelise','G','Neurology');INSERT INTO DOCTOR…
- SQL Statement: SELECT FROM Shippers; Edit the SQL Statement, and click "Run SQL" to see the result. Show Transcribed Text Get your own SQL server Your Database: Tablenames Records Customers Categories Employees OrderDetails Orders Products Shippers Suppliers 91 8 10 518 196 77 3 29 1. Prepare a list of orders by Shipper showing the Shipper ID, Order ID, Product ID and Quantity. List should be in shipper orders 1. Prepare a list of orders by employee showing the employee ID, Order ID, Product ID and Quantity. List should be in employee order 1. Prepare a list of orders by customers showing the customer ID, Order ID, Product ID and order quantity. List should be in customer order Please give SQL Statements. Which of the following is not a valid statement? (refer to the tables in the JustLee Books database) a. You can change the name of a table only if it doesn’t contain any data.b. You can change the length of a column that doesn’t contain any data.c. You can delete a column that doesn’t contain any data.d. You can add a column to a table.SBN Title Author 12345678 The Hobbit J.R.R. Tolkien 45678912 DaVinci Code Dan Brown Your student ID DBS311 Your Name use the following statement to Write a PL/SQL Function that accepts 4 parameters, 2 strings representing students names, and 2 integers representing the marks they received in DBS311. The function will determine which student had the higher mark and return the name of the student. If the marks were the same, then return the word "same" and return "error" if an error occurs or the calculation can not be determined.
