Modern Database Management
13th Edition
ISBN: 9780134773650
Author: Hoffer
Publisher: PEARSON
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Textbook Question
Chapter 6, Problem 6.6RQ
Explain the relationship between EXISTS and correlated subqueries.
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Explain the relationship between EXISTS and correlated subqueries.
Define “correlated subqueries”.
Considering Vaccination Database, write queries to:
Display the Subject CNIC, Name, Contact, Dose1 Center, and Dose2 Center as shown below:
CNIC
Name
Contact
Dose1 Center
Dose2 Center
22401-6645321-1
Nasir
3409991112
Lachi
Kohat 2
14301-6045321-5
Shahab
3409991112
kohat 3
Dara
The subjects who have been vaccinated different types in Dose1 and Dose2. For instance, subjects who were vaccinated ‘Sinovac’ in the first dose, while Pfizer in the second dose.How many Viles of each type have been consumed so far. How many subjects are vaccinated from expired viles. Suggest the name of Incharge for the best performance award based on the highest number of subjects vaccinated on a single day
Chapter 6 Solutions
Modern Database Management
Ch. 6 - Define each of the following terms: dynamic view...Ch. 6 - Match the following terms to the appropriate...Ch. 6 - Prob. 6.3RQCh. 6 - Prob. 6.4RQCh. 6 - Prob. 6.5RQCh. 6 - Explain the relationship between EXISTS and...Ch. 6 - Prob. 6.7RQCh. 6 - Under what conditions can a UNION clause be used?Ch. 6 - Prob. 6.9RQCh. 6 - Explain why it is necessary to limit the kinds of...
Ch. 6 - Describe a set of circumstances for which using a...Ch. 6 - Prob. 6.12RQCh. 6 - Prob. 6.13RQCh. 6 - Prob. 6.14RQCh. 6 - Prob. 6.15RQCh. 6 - Prob. 6.16RQCh. 6 - Prob. 6.17RQCh. 6 - Prob. 6.18RQCh. 6 - Prob. 6.19RQCh. 6 - List for advantages of SQL-invoked routines.Ch. 6 - Prob. 6.21RQCh. 6 - Prob. 6.22RQCh. 6 - Prob. 6.23RQCh. 6 - This chapter discusses the data dictionary views...Ch. 6 - Write an SQL query to answer the following...Ch. 6 - Write SQL retrieval commands for each of the...Ch. 6 - Write an SQL query to answer the following...Ch. 6 - Write SQL queries to answer the following...Ch. 6 - Write SQL queries to answer the following...Ch. 6 - Write an SQL query to answer the following...Ch. 6 - Prob. 6.31PAECh. 6 - Prob. 6.32PAECh. 6 - Prob. 6.33PAECh. 6 - What do you need to do if a tutor signs up and...Ch. 6 - Prob. 6.35PAECh. 6 - Write the SQL query to find any tutors who have...Ch. 6 - Prob. 6.37PAECh. 6 - Write an SQL query to determine the total number...Ch. 6 - Prob. 6.39PAECh. 6 - Prob. 6.40PAECh. 6 - Prob. 6.41PAECh. 6 - Prob. 6.42PAECh. 6 - Prob. 6.43PAECh. 6 - Which tutor needs to be reminded to tum in...Ch. 6 - Prob. 6.45PAECh. 6 - Write an SQL query to list all product line names...Ch. 6 - Modify to include only those product lines the...Ch. 6 - Prob. 6.48PAECh. 6 - Prob. 6.49PAECh. 6 - Write an SQL query to display the order number,...Ch. 6 - Prob. 6.51PAECh. 6 - Prob. 6.52PAECh. 6 - Prob. 6.53PAECh. 6 - Prob. 6.54PAECh. 6 - Prob. 6.55PAECh. 6 - Prob. 6.56PAECh. 6 - Prob. 6.57PAECh. 6 - Prob. 6.58PAECh. 6 - Write an SQL query to list each customer who...Ch. 6 - Prob. 6.60PAECh. 6 - Modify Problem and Exercise 6-60 so that the list...Ch. 6 - Prob. 6.62PAECh. 6 - Prob. 6.63PAECh. 6 - Prob. 6.64PAECh. 6 - Prob. 6.65PAECh. 6 - Prob. 6.66PAECh. 6 - Prob. 6.67PAECh. 6 - Prob. 6.68PAECh. 6 - Prob. 6.69PAECh. 6 - Prob. 6.70PAECh. 6 - Prob. 6.71PAECh. 6 - Rewrite your answer to Problem and Exercise 6-71...Ch. 6 - Display the customer ID, name, and order ID for...Ch. 6 - Prob. 6.74PAECh. 6 - Prob. 6.75PAECh. 6 - Prob. 6.76PAECh. 6 - Prob. 6.77PAECh. 6 - Prob. 6.78PAECh. 6 - Prob. 6.79PAECh. 6 - Write an SQL query to list the order number,...Ch. 6 - Prob. 6.81PAECh. 6 - Prob. 6.82PAECh. 6 - Prob. 6.83PAECh. 6 - Prob. 6.84PAECh. 6 - Prob. 6.85PAE
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- Ensure that the only legal values for the BDRMS column in the CONDO_UNIT table are 1, 2, or 3.arrow_forwardDelete the OWNER_INDEX 3 index from the OWNER table.arrow_forwardUsing the relations in the appendix, write the following queries in SQL:i. Display a list of all instructors, showing each instructor’s ID and the number of sections taught. Your query should use an outer join, and should not use sub-queries.ii. Write the same query as in part a, but using a scalar subquery and not using outer join.iii. Display the list of all course sections offered in spring 2018, along with the ID and name of each instructor teaching the section. If a section has more than one instructor, that section should appear as many times in the result as it has instructors. If a section does not have any instructor, it should still appear in the result with the instructor name set to “—”.iv. Display the list of all departments, with the total number of instructors in each department, without using sub-queries. Make sure to show departments that have no instructors, and list those departments with an instructor count of zero.arrow_forward
- What potential problems might arise when using non-deterministic functions in SQL?arrow_forwardWrite SQL Queries for following set of tables:EMPLOYEE (EmpNo, Name, DoB, Address, Gender, Salary, DNumber)DEPARTMENT (DNumber, Dname, ManagerEmpNo, MnagerStartDate).i) Display the Age of ‘male’ employees.ii) Display all employees in Department named ‘Marketing’.iii) Display the name of highest salary paid ‘female’ employee.iv) Which employee is oldest manger in company?v) Display the name of department of the employee ‘SMITH’..arrow_forwardUsing the university schema, write an SQL query to find the names and IDs ofthose instructors who teach every course taught in his or her department (i.e.,every course that appears in the course relation with the instructor’s department name). Order result by namearrow_forward
- Please check the answer twice and add explanation to.every step Note - don't use AI answer ( i will report)arrow_forwardWrite a SQL code that will save the above changes made to the Articles table.arrow_forwardClosely examine the following tables and use it to answer the questions that follow: department course student_type student_category Student registration registration_type Suppose that the following are true: - all id column are primary keys in whichever table they are - the dept_id in course table is foreign key that is referencing the id column in the department table - the foreign keys stud_type_id, stud_cat_id in the student table are referencing the id columns in the student_type and student_category tables respectively. - the coursecode and stud_id columns in the registration table are foreign keys in the course and student tables respectively. 1. Design an Entity Relationship Diagram for the system above. 2. Write query that would return the names and contacts of all Local students. 3. Write a query that would return names, contact and locations of all departments that has a location text with Ave 3 as part of it. [hint: use the LIKE clause with “_” or “%”] 4. What would…arrow_forward
- Compare and contrast scalar functions and table-valued functions in SQL. When might you choose one type of function over the other in your database design?arrow_forwardJustify your use of EXISTS and associated subqueries.arrow_forwardCreate both the tables Branch and Supervisor with appropriate attribute names, primary key, foreign key and data type. Insert the above records into Branch and Supervisor tables. Display all the records from Branch and Supervisor (Separately) Display all the details of Name, City and Salary. Display the total salary for every city in the supervisor table. Write a PL/SQL program to display BName from the Branch table for D5. Write a PL/SQL program to display all the details of Supervisor who is getting more than 1250 salary using cursor. Update city as ‘Suhar’ for Supervisor named Jack. Write a Procedure to receive a Supervisor SId as Input and display all the related values of that Supervisor. (Also write the calling program.) Delete all the branch details of operations.arrow_forward
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