What indices will be visited for the sorted data below?
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- In this database we have users that can be two types students or instructors. They have groups and memberships. Any user can post and the post type can be video, photo or text. Here is the table structure: CREATE TABLE USER_ ( USER_ID INT NOT NULL AUTO_INCREMENT, CREATE_DATE DATE NOT NULL, PROF_DESC VARCHAR (100), PROF_PIC VARCHAR(40), LOCATION VARCHAR (40) NOT NULL, PRIMARY KEY (USER_ID) ); CREATE TABLE USER_INFO( USER_ID INT NOT NULL, SU_EMAIL CHAR(18), USER_FNAME VARCHAR(15), USER_LNAME VARCHAR (15), USER_DOB DATE, USER_GENDER CHAR(1), PRIMARY KEY (USER_ID), FOREIGN KEY (USER_ID) REFERENCES USER_(USER_ID) ON UPDATE CASCADE ); CREATE TABLE STUDENT ( SU_ID INT NOT NULL, USER_ID INT NOT NULL, YEAR_ VARCHAR (10), MAJOR VARCHAR (20), LOCATION VARCHAR (40) NOT NULL, PRIMARY KEY (SU_ID), FOREIGN KEY (USER_ID) REFERENCES USER_(USER_ID) ON UPDATE CASCADE ); CREATE TABLE INSTRUCTOR ( SU_ID INT NOT NULL, USER_ID INT NOT NULL, DEPARTMENT VARCHAR (40), INSTR_TYPE VARCHAR (40),…QUESTION 10 A primary index is a non-dense index O True O FalseProblem 2: Create a Dataframe whose index is winery and whose values is the maximum number of points a wine costing that much was given in a review. Sort the values by points, descending (so that 80 points is at the bottom and 100 points is at the top).
- please find: indexes examined and value returnedThe following tables provide a very small portion of the data that will be kept in the database. These data need to be inserted into the database for testing purposes. Write the INSERT commands necessary to place the following data in the tables that were created in Problem 65. RENTAL RENT_NUM RENT_DATE MEM_NUM 1001 01-MAR-13 103 1002 01-MAR-13 105 1003 02-MAR-13 102 1004 02-MAR-13 110 1005 02-MAR-13 111 1006 02-MAR-13 107 1007 02-MAR-13 104 1008 03-MAR-13 105 1009 03-MAR-13 111 VIDEO VID_NUM VID_INDATE MOVIE_NUM 54321 18-JUN-12 1234 54324 18-JUN-12 1234 54325 18-JUN-12 1234 34341 22-JAN-11 1235 34342 22-JAN-11 1235 34366 02-MAR-13 1236 34367 02-MAR-13 1236 34368 02-MAR-13 1236 34369 02-MAR-13 1236 44392 21-OCT-12 1237 44397 21-OCT-12 1237 59237 14-FEB-13 1237 61388 25-JAN-11 1239 61353 28-JAN-10 1245 61354 28-JAN-10 1245 61367 30-JUL-12 1246 61369 30-JUL-12 1246Delete the index named ITEM_INDEX3.
- In OES4 database, we can verify the values stored in subtotal field by using the following 1: col gross_sales for 99999999 col subtotal for 99999999 select o.order_no,sum(qty*Unit_cost) Gross_Sales, sum(o.subtotal) subtotal from orders o, orderline ol, product p where o.order_no=ol.order_no and ol.product_no=p.product_no group by o.order_no; II: col gross_sales for 99999999 col subtotal for 99999999 select o.order_no,sum(qty*Unit_cost) Gross_Sales, sum(o.subtotal) subtotal from orders o, orderline ol, product p where o.order_no=ol.order_no and ol.product_no=p.product_no group by o.order_no; I & II: are correct I & II: are not correct | || I & II: are not correct I & II: are correctWrite Mysql code for: The database has three tables for tracking horse-riding lessons: Horse with columns: ID - primary key RegisteredName Breed Height BirthDate Student with columns: ID - primary key FirstName LastName Street City State Zip Phone EmailAddress LessonSchedule with columns: HorseID - partial primary key, foreign key references Horse(ID) StudentID - foreign key references Student(ID) LessonDateTime - partial primary key Write a SELECT statement to create a lesson schedule for Feb 1, 2020 with the lesson date/time, student's first and last names, and the horse's registered name. Order the results in ascending order by lesson date/time, then by the horse's registered name. Make sure unassigned lesson times (student ID is NULL) appear in the results. Hint: Perform a join on the LessonSchedule, Student, and Horse tables, matching the student IDs and horse IDs.Track Addresses Employee Key Values 1234 ЕMP6 ЕMP8 EMP10 EMP12 5678 ЕMP14 EMP16 EMP19 EMP20 9101 EMP26 EMP27 EMP28 EMP29 1121 ЕMP31 ЕMP38 EMP40 EMP42 Index file 1 a. How many comparisions are required to find EMP38 in index file 1 given above b. Update index file by inserting a new employee with employee no. 41. Recreate the index file after updating the index file c. Visualized by recreating the index file how can we reduce camparision to find EMP38
- DCIT184 STAT181 Closely examine the following tables and use it to answer the questions that follow: department student_type student_category id |name | location | contact id name id name Computer Science Mathematics Statistics Sociology 005 | History English Linguistic North Ave 1 | +233234545453 North Ave 2 | +233234564554 North Ave 3 001 002 1 | Regular 2| Distance 3 | Sandwich 1 | Foreign 2| Local 003 +233285475547 004 East Ave 4 +233264638374 East Ave 2 +233244454744 006 East Ave 3 +233245653443 007 East Ave 4 +233268888888 course code | title dept_id | credit CSIT205 Object Oriented Techniques For IT Problem Solving Applied IT Programming Database Fundamentals Office Productivity Tools Programming Fundamentals Introduction to History History of The Gold Coast Introduction To Basic Statistics CSIT206 3 CSIT207 DCIT103 DCIT104 HIST101 5 | 3 HIST103 3 STAT101 Student id first_name last_name dob contact stud_cat_id | stud_type_id e0000001 Stephen Amankwah 1999-01-12 +233456789021 1…How would the index change after replacing 107 with 104, and adding an additional entry to the base index with key value 155?Composite datatypes can only have multi row &multi column values in them Answers: Yes No
