What indices will be visited for the unsorted data below? target = 92 index: 0 1 2 3 4 5 6 7 8 value: 12 14 18 21 29 | 17 16 15 13 none of these is correct 01234 5 6 789 01234 5 6 78
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- Composite datatypes can only have multi row &multi column values in them Answers: Yes NoThe 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.What factors influence which index method is used?
- Write 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.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),…How would the index change after replacing 107 with 104, and adding an additional entry to the base index with key value 155?
- 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…Delete the OWNER_INDEX 3 index from the OWNER table.Create the following indices, giving them an appropriate name in your spreadsheet (make sure to use the reverse-coded variable where relevant): Belief that climate change is a real phenomenon: Take the mean of scepticism_2, scepticism_6, and scepticism_7. Preferences for government intervention to solve problems in society: Take the mean of cog_1, cog_2, cog_3, cog_4, cog_5, and cog_6. Feeling of personal responsibility to act pro-environmentally: Take the mean of PN_1, PN_2, PN_3, PN_4, PN_6, and PN_7. When creating indices, we may be interested to see if each item used in the index measures the same underlying variable of interest (known as reliability or consistency). There are two common ways to assess reliability: either look at the correlation between items in the index, or use a summary measure called Cronbach’s alphaCronbach’s alpha A measure used to assess the extent to which a set of items is a reliable or consistent measure of a concept. This measure ranges from 0–1,…
- Using the WideWorldDistributors database and the Sales schema create a function that takes InvoiceID as an input parameter and returns all the rows from the table InvoiceLines for the InvoiceID value passed into the function. If the result is a NULL return a zeroQ2: A-Given the following tables: Student Subject Std_ID 001 002 003 004 Fname Smith Smith Beal Thomson Lname Jolin Susan Fred Marie Std_ID 001 001 002 002 003 Semester 004 Falls03 Spro4 Falls03 C_ID Eng01 Ger01 Eng01 Ger01 Ger01 CSection Spro4 Spro4 Spro4 1. For each table in the database, identify the primary key and the foreign key(s). 2. Do the tables exhibit entity integrity? Explain your answer? 3. Do the tables exhibit referential integrity? Explain your answer? Ita01 ZZZZZZ IN 2N IN 2N IN CName English IN German English German German Italian Grade A B A B A BWhat do you mean by Index hunting?