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- Which of the following symbols is used in a SELECT clause to display all columns from a table? / & * "Which of the following statements is correct? A table can contain a maximum of only one column marked as unused. You can delete a table by removing all columns in the table. Using the SET UNUSED clause allows you to free up storage space used by a column. None of the above statements are correct.Which object in the data dictionary enables you to verify DEFAULT column settings? DEFAULT_COLUMNS DEF_TAB_COLUMNS USER_TAB_COLUMNS None of the above
- Which of the following characters can be used in a table name? a. b. ( c. % d. !Write a SELECT statement that returns two columns basedon the EMPLOYEES table. Contact, is the employeelastname and the first initial of the first name. The secondcolumn, Phone, is the homephone without the area code.Only return rows for those employees in the 206 areacode, sort the results by the last name.You have been instructed to add a new student information to the students table. Because the student is new, he has no marks before, you should not add an amount to the CGPA. The Students table contains these columns: Student_id NUMBER(10) Student_name VARCHAR2(30) Student phone NUMBER(10) CGPA NUMBER(2,2) Which INSERT statements will accomplish your objective? O a. INSERT INTO students VALUES (365, 'Khalil',99554721, 0 ) O b. INSERT INTO students VALUES (365, 'Khalil',99554721, 'NO CGPA' ) O c. INSERT INTO students VALUES (365, 'Khalil',99554721, NULL ) O d. INSERT INTO students VALUES (365, 'Khalil',99554721) Which line of code has an error? 1. CREATE TABLE FRUITS VEGETABLES 2. FRUIT TYPE VARCHAR2, 3. FRUIT NAME CHAR (20), 4. QUANTITY NUMBER (4)); O a. 1 O b. 2 O c. 3
- Q11: After mapping the following ERD, choose the correct SQL statement that will insert a single row to the Vertebrates Table AID weight Vertebrates vertrebraLength Animal AName Disjoint ISA Invertebrates locations Eats amountPerDay type Food FID a. Insert into Vertebrates (VertebratesLength) values (1.5') b. Insert into Vertebrates (AID, AName, Weight) values (101', 'Salmon', '30') c. Insert into Vertebrates (AID, AName, Weight, VertebratesLength) values (101, 'Salmon', '30','1.5) d. Insert into Vertebrates (AID, Vertebrates Length) values (101', '1.5')The INSERT statement needs to specify column names unless _____. -multiple rows are being inserted into the table with a single statement -only one row is being inserted into the table -the values are inserted in the same order as the table's columns -the values that are being inserted are for columns that are primary keysQuestion Workspace Which of the following statements is valid? a. DROP table_name; b. DELETE TABLE table_name; c. UPDATE TABLE table_name SET col1 = new_value; d. ALTER TABLE table_name MODIFY col1 CHAR(10); e. All of the above. f. None of the above. Icon Key
- You have been told that you need to store the zip code for employees. Add a column to the EMPLOYEE table which will be used to store each employee’s zip code Update two rows in the EMPLOYEE table and assign a zip code (must have a WHERE clause). (you MAY use 1 or 2 statements) Write a query that includes each employee's last name, department name (not ID), and salary for each employee whose salary is less than the average for their department9. Write a SELECT statement that uses aggregate window functions to calculate the total due for all vendors and the total due for each vendor. Return 3 Columns: The vendor id from the Invoices table. The balance due (invoice_total-payment_total-credit_total) for each invoice in the invoices table with a balance greater than 0. The total balance due for all vendors in the Invoices table. Modify the column that contains the balance due for each vendor so it contains a cumulative total by balance due.with it, paste your code in a text file named Student.txt and save it in your task folder. Write the SQL code to create a table called Student. The table structure is summarised in the table below (Note that STU_NUM is the primary key): STU_NUM Attribute Name STU_SNAME STU_FNAME STU_INITIAL STU_STARTDATE COURSE_CODE PROJ_NUM STU STU_S STU_F STU_INITIAL NUM NAME NAME 01 02 Snow John E CHAR(6) After you have created the table in question 1, write the SQL code to enter the first two rows of the table as below: Stark Arya с VARCHAR(15) VARCHAR(15) CHAR(1) DATE CHAR(3) INT(2) Data Type STU_STARTDATE COURSE_ PROJ_ CODE NUM 05-Apr-14 12-Jul-17 201 305 6 11 Assuming all the data in the Student table has been entered as shown below, write the SQL code that will list all attributes for a COURSE_CODE of 305.