Only answer Question 17Which of the following is a technique for optimizing the internal performance of the relational data modelaA Clustering dataBUsing random index organizationsNot reporting statistics to save machine resourcesAvoiding indexes on secondary keys1 Poir1 Point

A relational database is a collection of data items organised as a set of tables. Relationships can…

Which of the following is a technique for optimizing the internal performance of the relational data model? (A) Clustering data B) Using random index organizations Not reporting statistics to save machine resources Avoiding indexes on secondary keys 1 Point

Which of the following is a technique for optimizing the internal performance of the relational data model? (A) Clustering data B) Using random index organizations Not reporting statistics to save machine resources Avoiding indexes on secondary keys 1 Point

Principles of Information Systems (MindTap Course List)

13th Edition

ISBN:9781305971776

Author:Ralph Stair, George Reynolds

Publisher:Ralph Stair, George Reynolds

Chapter5: Database Systems And Big Data

Section: Chapter Questions

Problem 14SAT

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Discuss the advantages of using array data types in a database. Provide a scenario where using an array data type would be beneficial.
An index is an orderly arrangement used to logically access rows in a table. From a conceptual point of view, an index is composed of an index key and a set of pointers. In your opinion, explain the role indexes play in a relational database.
Question A city college would like to maintain their academic information in a MySql database system. The following are the interested information: Courses: Catalog # (M 170 for instance) Credit Hours; Name of the Course (Database Design Fundamentals for instance) Course Descriptions Prerequisite Components (Lecture, or Laboratory for instance) Classes: Class # Class Name (usually the course name, M 170 for instance) Start Date End Date Meeting time (9:30 am ~ 12:15 pm, for instance) Days in a week (Monday) Term (Spring 2018, for instance) Location (TIE Building for instance) Room (UB 301, for instance) Instructor Online status (online, or in-person) Faculty: Employee Id (001880301, for instance) First Name Last Name Title (professor, for instance) Email Phone Office Location (TIE building, for instance) Room (UB303, for instance) Student: Student ID First Name Last Name Plan Sub Plan Advisor Current GPA Grade of each course The Term you got the grade for a course. The class…
How do data transformation functions aid in manipulating complex datatype columns in relational databases?
Practical Tasks for Database Systems Question:1 Show all data from employee table where name should be in ascending and salary in descending order. Question:2 Show the total length of (eno, deptno). joined it and rename by function from the employee table? Question:3 Show the ename first 3 alphabets of manager? Question:4 Write a query that show the manager data like this. ename job ***MANAGER *** MANAGER JONES BLAKE Question:5 Calculate the percentage of any student and round to 0 digit? Question:6 Show the last date of December 2014? Question:7 Show the date of next data base class and rename by cs-400? Question:8 Convert today date to character?
Question A city college would like to maintain their academic information in a MySql database system. The following are the interested information: Courses: Catalog # (M170 for instance) Credit Hours; Name of the Course (Database Design Fundamentals for instance) Course Descriptions Prerequisite Components (Lecture, or Laboratory for instance) Classes: Class # Class Name (usually the course name, M 170 for instance) Start Date End Date Meeting time (9:30 am ~ 12:15 pm, for instance) Days in a week (Monday) Term (Spring 2018, for instance) Location (TIE Building for instance) Room (UB 301, for instance) Instructor Online status (online, or in-person) Faculty: Employee Id (001880301, for instance) First Name Last Name Title (professor, for instance) Email Phone Office Location (TIE building, for instance) Room (UB303, for instance) Student: Student ID First Name Last Name Plan Sub Plan Advisor Current GPA Grade of each course The Term you got the grade for a course. The class…
Consider the following schema for a company database and answer the following questions: DEPARTMENT Dname Dnumber Mgr_ssn Mgr_start_date M EMPLOYEE Fname Minit Lname Ssn Bdate Address Sex Salary Dno M WORKS ON Esan Pno Hours PROJECT Pname Pnumber Plocation Q1//create all tables of this schema and apply any necessary constraints
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PART B Consider the college database you implemented in the image provided and answer the following questions. i. Write SQL statements to populate the relevant tables with the following data Studno givenName familyName faculty hons year courseno equipmentused subjectsubject 220123 Angel Matheaus FCI Computer Science 2 CSC101 laptop java 227456 Michael Jackson ACC Accounting 3 ACC510 calculator Statistics 223546 Joy Willian MGT Management 1 MGT305 project leadership Name roomno course Andrea Kulima 709 ACC510 Princess Bukohwo FCI 6 CSI101 Peter Jones 201 MGT305 Thandeka Pheto OB 12 CSI101 All staff (appraisees) are appraised by Thandeka Pheto. ii. Write an SQL statement to change Thandeka Pheto’s room number to “PH506”iii. Joy Willian decided to transfer to another college, write SQL statement to remove her details from the college’s database. iv. Write an SQL query to show all students in year 2 of their studies v. Write an SQL query to list all…
Question A city college would like to maintain their academic information in a MySql database system. The following are the interested information: Courses: Catalog # (CIT 170 for instance) Credit Hours; Name of the Course (Database Design Fundamentals for instance) Course Descriptions Prerequisite Components (Lecture, or Laboratory for instance) Classes: Class # Class Name (usually the course name, CIT 170 for instance) Start Date End Date Meeting time (9:30 am ~ 12:15 pm, for instance) Days in a week (Monday) Term (Spring 2018, for instance) Location (TIE Building for instance) Room (UB 301, for instance) Instructor Online status (online, or in-person) Faculty: Employee Id (001880301, for instance) First Name Last Name Title (professor, for instance) Email Phone Office Location (TIE building, for instance) Room (UB303, for instance) Student: Student ID First Name Last Name Plan Sub Plan Advisor Current GPA Grade of each course The Term you got the grade for a course. The…
1. Connect mySQL database by using Python. 2. Create database and tables as given below by using Python. (a) BANK database (b) CUSTOMER: customer_id integer, name varchar, lastname varchar, registration_date date, score integer (c) BRANCH: branch_id integer, branch name varchar, cash_hold float, foundation date date, liability float (d) LOAN: loan_id integer, customer_id integer, branch_id integer, amount float Choose primary and foreign keys depending on the base design. 3. Create arrays of at least 5 different records. Use these arrays to populate each table in the database.

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