Chapter 6, Problem 14RQ

Topic: Server-Side Development (Hacker Defense) In a paragraph or two, describe why prepared statements are one good defense against SQL injection. How do they work? What keeps the "injection" from happening?

Normalization works through a series of stages called normal forms. For most purposes in business database design, the normalization process. stages are as high as you need to go in five two four three

Web devvelopment and e-commerce question

What are percentiles and quartiles ?

Write the DDL statements for declaring the Library relational database schema listed below. Specify the kay (Primary and Foreign where applicable). BOOK Book id Title Publisher name BOOK AUTHORS Bock id Author name PUBLISHER Name Address Phone BOOK COPIES Book d Branch id No ef_oopies BOOK LOANS Book id Branch id Card no Dute out Due date LIBRARY BRANCH Branch id Branch name Addresa BORROWER Card no Name Addre Phone

ormulate the following queries in Structured Query Language SQL The following tables form part of a database held in an RDBMS: Employee (empNo, fName, lName, address, DOB, sex, position, salary, deptNo) Department (deptNo, deptName, mgrEmpNo) Project (projNo, projName, deptNo) WorksOn (empNo, projNo, dateWorked, hoursWorked) where Employee contains employee details and empNo is the key. Department contains department details and deptNo is the key. mgrEmpNo identifies the employee who is the manager of the department. There is only one manager foreach department. Project contains details of the projects in each department and the key is projNo (notwo departments can run the same project). WorksOn contains details of the hours worked by employees on each project, and empNo/ projNo/dateWorked form the key. Formulate the following queries in Structured Query Language SQL List all the details of employees who are female and born after 1990. List employee numbers and names of all…

SQL QUERIES Employees(EMPLOYEE_ID, FIRST_NAME, LAST_NAME, EMAIL, PHONE_NUMBER, HIRE_DATE,JOB_ID, SALARY, COMMISSION_PCT, MANAGER_ID, DEPARTMENT_ID,DEPARTMENT_NAME)Department(DEPARTMENT_ID, DEPARTMENT_NAME, MANAGER_ID, LOCATION_ID)Location(LOCATION_ID,STREET_ADDRESS,POSTAL_CODE,CITY,STATE_PROVINCE,COUNTRY_ID) Write a Query in SQL to delete the record of all those cities where city name ends with b fromlocations table.

sql queries Employees(EMPLOYEE_ID, FIRST_NAME, LAST_NAME, EMAIL, PHONE_NUMBER, HIRE_DATE,JOB_ID, SALARY, COMMISSION_PCT, MANAGER_ID, DEPARTMENT_ID,DEPARTMENT_NAME)Department(DEPARTMENT_ID, DEPARTMENT_NAME, MANAGER_ID, LOCATION_ID)Location(LOCATION_ID,STREET_ADDRESS,POSTAL_CODE,CITY,STATE_PROVINCE,COUNTRY_ID) Write a query in SQL to display the Entire data of All those employees whoseDEPARTMENT_ID is greater than the DEPARTMENT_ID of all those employees who earn morethan 50,000 per month Write a query in SQL to display the minimum, maximum salary and DEPARTMENT_NAMEof all those departments whose minimum salary is greater than 4000 in ascending order.

SQL QUERIES Employees(EMPLOYEE_ID, FIRST_NAME, LAST_NAME, EMAIL, PHONE_NUMBER, HIRE_DATE,JOB_ID, SALARY, COMMISSION_PCT, MANAGER_ID, DEPARTMENT_ID,DEPARTMENT_NAME)Department(DEPARTMENT_ID, DEPARTMENT_NAME, MANAGER_ID, LOCATION_ID)Location(LOCATION_ID,STREET_ADDRESS,POSTAL_CODE,CITY,STATE_PROVINCE,COUNTRY_ID) Write a query in SQL to display the DEPARTMENT_NAME of all those Departments whoseDEPARTMENT_ID is greater than the DEPARTMENT_ID of Physics department. Write a Query in SQL to show the FIRST_NAME of all those employees whose salary is lessthan the salary of all those employees whose MANAGER_ID is 101 or 102.