Database Systems: Design, Implementation, & Management
11th Edition
ISBN: 9781285196145
Author: Steven, Steven Morris, Carlos Coronel, Carlos, Coronel, Carlos; Morris, Carlos Coronel and Steven Morris, Carlos Coronel; Steven Morris, Steven Morris; Carlos Coronel
Publisher: Cengage Learning
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Chapter 11, Problem 6P
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Type of
From the given query, it is identified that the type of database I/O operation that is likely to be used is Table scan (full).
- The function table full scan is to scan the entire table in a sequential order...
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Closely 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…
For the following Student table, find all the possible functional dependencies that areheld.Schema: Student (Regno, Name, DOB, Phone, Instructor_ID, Instructor_Name, Instructor_Office)
Consider the following database tables.
Employee (empNo, empName, street, city)
Works (empNo, companyName, joiningDate, salary, deptNo)
Employee salary (empNo, basic, total_deduction, net_salary, gross_salary)
Note that empNo is generated using a sequence
Write a PL/SQL code to calculate and then print the total gross salary of first 10 records in Employee table.
Chapter 11 Solutions
Database Systems: Design, Implementation, & Management
Ch. 11 - Prob. 1RQCh. 11 - What index should you create? Write the required...Ch. 11 - What is the focus of most performance-tuning...Ch. 11 - What are database statistics, and why are they...Ch. 11 - How are database statistics obtained?Ch. 11 - What database statistics measurements are typical...Ch. 11 - How is the processing of SQL DDL statements (such...Ch. 11 - In simple terms, the DBMS processes a query in...Ch. 11 - If indexes are so important, why not index every...Ch. 11 - What is the difference between a rule-based...
Ch. 11 - Prob. 11RQCh. 11 - What are some general guidelines for creating and...Ch. 11 - Prob. 13RQCh. 11 - Prob. 14RQCh. 11 - Prob. 15RQCh. 11 - SELECT SELECT EMP_LNAME, EMP_FNAME, EMP_AREACODE,...Ch. 11 - Problem 1 and 2 are based on the following query:...Ch. 11 - Using Table 11.4 as an example, create two...Ch. 11 - Problems 46 are based on the following query:...Ch. 11 - Problems 46 are based on the following query:...Ch. 11 - Prob. 6PCh. 11 - Problems 732 are based on the ER model shown in...Ch. 11 - Problems 732 are based on the ER model shown in...Ch. 11 - Problems 732 are based on the ER model shown in...Ch. 11 - Problems 732 are based on the ER model shown in...Ch. 11 - Problems 1114 are based on the following query:...Ch. 11 - Problems 1114 are based on the following query:...Ch. 11 - Problems 1114 are based on the following query:...Ch. 11 - Problems 1114 are based on the following query:...Ch. 11 - Problems 15 and 16 are based on the following...Ch. 11 - Problems 15 and 16 are based on the following...Ch. 11 - Problems 1721 are based on the following query:...Ch. 11 - Problems 1721 are based on the following query:...Ch. 11 - Prob. 19PCh. 11 - Prob. 20PCh. 11 - Problems 1721 are based on the following query:...Ch. 11 - SELECT SELECT P_CODE, P_DESCRIPT, P_PRICE,...Ch. 11 - Problems 2224 are based on the following query:...Ch. 11 - Problems 2224 are based on the following query:...Ch. 11 - Problems 25 and 26 are based on the following...Ch. 11 - Problems 25 and 26 are based on the following...Ch. 11 - Prob. 27PCh. 11 - Problems 27 and 28 are based on the following...Ch. 11 - Problems 2932 are based on the following query:...Ch. 11 - Problems 2932 are based on the following query:...Ch. 11 - Problems 2932 are based on the following query:...Ch. 11 - Problems 2932 are based on the following query:...
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- Delete the OWNER_INDEX 3 index from the OWNER table.arrow_forwardProblems 25 and 26 are based on the following query: SELECT P_CODE, P_DESCRIPT, P_QOH, P_PRICE, V_CODE FROM PRODUCT WHERE V_CODE = '21344' ORDER BY P_CODE; How should you rewrite the query to ensure that it uses the index you created in your solution to Problem 25?arrow_forwardProblems 2932 are based on the following query: SELECT CUS_CODE, MAX(LINE_UNITSLINE_PRICE) FROM CUSTOMER NATURAL JOIN INVOICE NATURAL JOIN LINE WHERE CUS_AREACODE = '615' GROUP BY CUS_CODE; How would you rewrite the query to ensure that the index you created in Problem 31 is used?arrow_forward
- An EMPLOYEES table was added to the JustLee Books database to track employee information. Display a list of each employee’s name, job title, and manager’s name. Use column aliases to clearly identify employee and manager name values. Include all employees in the list and sort by manager name.arrow_forwardProblem 1 and 2 are based on the following query: SELECT EMP_LNAME, EMP_FNAME, EMP_AREACODE, EMP_SEX FROM EMPLOYEE WHERE EMP_SEX = 'F' AND EMP_AREACODE = '615' ORDER BY EMP_LNAME, EMP_FNAME; What indexes should you create? Write the required SQL commands.arrow_forwardProblems 27 and 28 are based on the following query: SELECT P_CODE, P_DESCRIPT, P_QOH, P_PRICE, V_CODE FROM PRODUCT WHERE P_QOH P_MIN AND P_MIN = P_REORDER AND P_REORDER = 50 ORDER BY P_QOH; What indexes would you recommend? Write the commands to create those indexes.arrow_forward
- The Car Maintenance team also wants to store the actual maintenance operations in the database. The team wants to start with a table to store CAR_ID (CHAR(5)), MAINTENANCE_TYPE_ID (CHAR(5)) and MAINTENANCE_DUE (DATE) date for the operation. Create a new table named MAINTENANCES. The PRIMARY_KEY should be the combination of the three fields. The CAR_ID and MAINTENACNE_TYPE_ID should be foreign keys to their original tables. Cascade update and cascade delete the foreign keys.arrow_forwardConsider the following database tables: Employee (empNo, empName, street, city) Works (empNo. companyName, joiningDate, salary, deptNo) Employee salary (empNo, basic, total deduction, net salary, gross salary) Write a PL/SQL code to display employee number, name and basic salary of the 5 highest paid employees.arrow_forwardOne of the TAL Distributors database's denormalized tables is as follows: The Customer table is no longer in third normal form due to which column or fields (CustomerNum, CustomerName, Street, City, State, PostalCode, Balance, CreditLimit, RepNum, RepName)? In this example, what is the denormalized table's normal form?arrow_forward
- In Sql These are some database from a set of tables insert into AccountHolder(AccountID, CustomerID, AccountType)values (55003, 115, 'Savings'),(44001, 101, 'Chequing'),(55006, 109, 'Savings'),(44002, 102, 'Chequing'),(44003, 113, 'Chequing'),(55007, 108, 'Savings'),(44004, 103, 'Chequing'),(44005, 110, 'Chequing'),(55005, 112, 'Savings'),(44006, 114, 'Chequing'),(55001, 111, 'Savings'),(44007, 107, 'Chequing'),(44008, 104, 'Chequing'),(55004, 106, 'Savings'),(44009, 105, 'Chequing'),(44010, 113, 'Chequing'),(55002, 107, 'Savings'),(44011, 110, 'Chequing'),(44012, 104, 'Chequing') select * from AccountHolder insert into Branch(LocationID, BranchName, Address, Type, DepositSum, LoanSum)values (1, 'Boulevard Branch', '3268 Wade Boulevard', 'Rural', 171848.88, 37681.72),(2, 'Avenue Branch', '4814 Dare Avenue', 'Rural', 232707.42, 68324.56),(3, 'Street Branch', '208 Ferry Street', 'Commercial', 375010.75, 44665.08),(4, 'Road Branch', '468 Zulauf Road', 'Commercial', 496001.41,…arrow_forwardDATABSEarrow_forwardUsing the database schema attached, write SQL query for these statements: (1) List stores with more than 200 customers. (2) Display the average amount paid by each customer, along with the customer's first and last name.arrow_forward
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